JPH069541Y2 - Mounting structure of T-branch connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a mounting structure of a T-branch connecting portion that can easily and quickly mount a T-branch connecting member for three phases on a utility pole or the like.

[Technical background of the invention and its problems] In general, in the power supply line, there are many cases where the supplier side wants to perform a power outage such as replacement of an electric line, replacement of a transformer, or extension of a branch line. On the other hand, the consumer side has come to use sophisticated electric equipment, office equipment, etc. As described above, it is almost impossible to carry out a power outage due to the supplier's convenience. There is.

Bypass construction methods have been developed to enable uninterrupted work during the above-mentioned work requiring power failure.
Such a bypass method uses a T-branch connector to
It is carried out as shown in the figure.

That is, first, the symbol H indicates a high-voltage line having a three-phase line of H1, H2, and H3, and each customer D has two low-voltage lines L of low voltage single phase in the transformer T1.
Power is supplied from. L1, L2, L3, and L4 have shown the electric wire of a low voltage line. Then, when the transformer T1 is replaced, outside the high voltage line section including the transformer T1,
A live line pull-down cable dh is connected between the three-phase lines H1, H2, H3 and the high-voltage switch Hs in the open state via a hand grip G, and one high-voltage switch Hs is connected.
Bypass cables B1, B2, B between the T-branch connector Tc and between the T-branch connector Tc and the other high-voltage switch Hs.
Connect 3 respectively. The primary side of the work transformer T2 disposed below the T-branch connection body Tc and the T-branch connection body Tc are connected by bypass cables B1, B2, B3, and the work transformer T2 has two ends. The lower side and the low-voltage line L are connected by a low-voltage pull-down cable de.

Here, if the high-voltage switch Hs is turned on, the T-branch connector Tc, the bypass cables B1, B2,
Electric power is supplied through B3 and the transformer T2 for construction, and electric power is also supplied to each customer D. If the jumper connection J is disconnected after this state, the customer D
It is possible to replace the transformer T1 by stopping the power supply to a predetermined high voltage line section including the transformer T1 without stopping the power supply to the transformer T1 at all.

Even when a branch line is newly installed on the high-voltage line, the bypass method can be used for uninterrupted work.

In the above-mentioned bypass method, the T-branch connector Tc is used as a single item. Therefore, when mounting them on a utility pole or the like, one T-branch connector Tc must be bound with a cloth belt. Therefore, the workability is remarkably poor, and it takes a long time.

Therefore, after the connection end of the bypass cable is plugged into the insertion hole of the T-branch connector Tc, the three T-branch connectors Tc are collectively mounted on the utility pole via the support metal fittings (not shown). Although a method of supporting it is also known (Actual exploitation 48-3
In the supporting portion of the T-branch connector, the bypass cable is damaged by the weight of the T-branch connector and the bypass cable, and the T-branch connector is not fixed to the utility pole. , Ie T
Since the end of the bypass cable is plugged in while the branch connector moves freely, the workability on the utility pole is poor and the worker cannot perform the connection work with one hand. It was

[Object of the Invention] The present invention has been made in view of the above circumstances, and provides a T-branch connecting portion mounting structure capable of mounting T-branch connecting bodies for three phases collectively and easily on a utility pole or the like. The purpose is to get.

[Outline of the Invention] The mounting structure of the T-branch connection portion of the present invention includes a pedestal including a base plate provided with three through holes spaced apart from each other along the length direction,
And a mounting bracket mounted on this gantry, and three T-shaped T-branch connectors on the pedestal plate of the gantry, with their horizontal legs directed in the width direction of the gantry, Further, each vertical leg is mounted by being engaged with the through hole, and the three T-branch connecting bodies are fixed to the base plate by a fixing band having a curved portion that engages with the horizontal leg. It is characterized by

[Embodiment of the Invention] Hereinafter, the present invention will be described with reference to the drawings of an embodiment. FIG. 1 is a plan view showing an embodiment of a mounting structure of a T-branch connecting body of the present invention, FIG. 2 is a side view of a mounting structure of a T-branching connecting portion, and FIG. 3 is a perspective view of a pedestal. is there. In these figures, a pedestal 1 includes two side plates 2 in a parallel arrangement and having an elongated trapezoidal shape.
And a back plate 3 connecting the bottoms of these side plates, and a back plate 4 connecting the rear edges of the side plates 2. The base plate 3 receives the vertical leg 5a of the T-branch connector 5. Three through holes 3a are provided at intervals in the length direction of the base plate 3.
Then, on the base plate 3 of the gantry 1, three T-shaped T-branch connecting bodies 5 are provided with their horizontal legs 5b oriented in the width direction of the base plate 3 and each vertical leg 5a. It is mounted so as to engage with the through holes 3a.

As shown in FIG. 4, the T-branch connector 5 is housed in a case 21 having a T-shaped two-divided structure, and the case 21.
A T-shaped connection terminal 22 in which a live wire can be freely attached and detached, an insulating rubber mold portion 23 surrounding the connection terminal 22, and
Shielding layer 24 provided on the outer peripheral surface of the insulating rubber mold portion 23
And a one-touch type connecting fitting 25 provided on the outer periphery of each receiving port 26 portion of the case 21.

Then, the three T-branch connecting bodies 5 are connected to the horizontal legs 5 of them.
It is collectively fixed on the base plate 3 by a fixing band 6 made of a metal band having a curved portion that engages with b. Code 7
Indicates a bolt for fixing the fixing band 6 to the base plate 3.

On the other hand, a U-shaped mounting plate 8 is fixed to the rear plate 4, and brackets 9 and 9 project from both leg pieces of the mounting plate 8. A U-shaped metal fitting 10 is rotatably attached to one of the brackets 9 and 9, and a bolt 11 is erected vertically to the plate surface on a central piece of the U-shaped metal fitting 10. Furthermore, a wing nut 12 is screwed onto the bolt 11. A ring 14 at the end of the chain 13 is engaged with the bolt 11. A releasable locking mechanism that engages the chain 13 with the other bracket and allows movement of the chain 13 in a direction that shortens the chain length between both brackets and suppresses movement in the opposite direction, For example, a chain stopper 15 made of a sprocket with a ratchet is rotatably attached. In addition,
The present invention is not limited to the above examples. For example, the means for attaching the pedestal to the electric pole or the like may have any configuration as long as it can be easily attached and detached.

In the mounting structure of the T-branch connection body having the above configuration, first,
Remove the wing nut 12 from the bolt 11 to remove the chain 13
Remove the terminal ring 14 from the bolt 11. Next, stand 1
The rear plate 4 of the above, that is, the mounting plate 8 is brought into contact with a utility pole or the like, and here the terminal ring 14 of the chain 13 is engaged with the bolt 11, and the wing nut 12 is screwed onto the bolt 11, so that the chain 13 is hung on the utility pole or the like. turn. Here, the other end of the chain 13 is inserted into the chain stopper 15, and the chain 13 is pulled so as to be pulled out from the chain stopper 15 to
To the utility pole.

As described above, the bypass cables B1 and B2, and the bypass cables B1 and B2 are attached to the respective T-branch connecting bodies 5 of the mounting structure attached to the utility pole or the like.
The connection ends of B3 are plugged in respectively.

In the mounting structure of the T-branch connector having such a structure, three T-branch connectors can be mounted on the base plate of the gantry easily and quickly all together, and each T-branch connector is fixed on the base plate. Therefore, the connection end of the bypass cable can be easily and easily plugged into the T-branch connector. Furthermore, since there is no risk of the T-branch connection body being overwhelmed by the bypass cable, there is no inconvenience of damaging the bypass cable, and three T-branch connection bodies can be mounted together on the pedestal. Can be easily attached, so that the bypass construction method can be implemented easily and easily.

[Advantages of the Invention] As is apparent from the above, in the mounting structure of the T-branch connector of the present invention, three T-branch connectors can be mounted on the base plate of the gantry easily and quickly all together. The connecting end of the bypass cable can be easily and easily plugged in to the T-branch connector, and there is no inconvenience of damaging the bypass cable, and the bypass construction method can be easily and easily implemented. .

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a mounting structure for a T-branch connector of the present invention, FIG. 2 is a side view of a mounting structure for a T-branch connector, FIG. 3 is a perspective view of a gantry, and FIG. FIG. 5 is a partially cutaway vertical sectional view of the T-branch connection body, and FIG. 1 ... Stand 5 ... T-branch connector 6 ... Fixed band 11 ... Bolt 12 ... Wing nut 13 ... Chain 14 ... Terminal ring 15 ... Chain stopper

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shinho Uchida 1-3-1 Uchisaiwaicho, Chiyoda-ku, Tokyo Within Tokyo Electric Power Co., Inc. (72) Masayoshi Asaga 1-1-5 Kiba, Koto-ku, Tokyo Fujikura Electric Wire Co., Ltd. (72) Inventor Yoji Koike 1-5-1, Kiba, Koto-ku, Tokyo Fujikura Electric Line Co., Ltd. (72) Ryoichi Kojima 2-1-1, Oda Sakae, Kawasaki-ku, Kawasaki City, Kanagawa Prefecture No. Showa Densen Denki Co., Ltd. (72) Inventor Ichiro Kimura 1-1 1-1 Oda Sakae, Kawasaki-ku, Kawasaki-shi, Kanagawa Within Showa Densen Denki Co., Ltd. (56) References: 48-34879, JP

Claims (1)

[Scope of utility model registration request] 1. A pedestal having a base plate provided with three through-holes spaced apart along the length direction, and a mounting bracket mounted on the gantry, the base plate of the gantry being mounted on the base plate. Is mounted with three T-shaped T-branch connectors with their horizontal legs directed in the width direction of the base plate and with each vertical leg engaged with the through hole. The attachment structure of the T-branch connection part, wherein the three T-branch connection parts are fixed to the base plate by a fixing band having a curved part that engages with the horizontal leg thereof.