JPH0727786Y2 - High-voltage underline support hardware - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial application] This invention is intended to support the end of a high voltage arm to support a high voltage down line from a high voltage distribution line supported by a high voltage arm to a pole transformer on a distribution pole. The present invention relates to a high-voltage draw wire supporting metal member that is installed by being suspended in a room.

[0002]

2. Description of the Related Art As shown in FIG. 5, when wiring a high-voltage drop line D from a high-voltage distribution line L extending over a high-voltage arm A of a distribution pole P to a pole transformer below the pole, In order to ensure the safety of work, it is preferable that the high-voltage pull-down line D be supported below the outer circumference of the armature A in the axial direction and be sufficiently separated from the power distribution pole P. Therefore, the support arm 21 having the insulator Gb is provided on the lower surface of the end of the armature A, and the high voltage pull-down line D is supported by the insulator Gb and pulled down to the pole transformer or the like below.

As a high-voltage draw wire support metal fitting for attaching the support arm 21 to the armrest A, a mounting flat plate 23 is conventionally attached to the support arm 21 by the arm 22 as shown in FIG. 6, and the flat plate 23 is L-shaped. There are those provided with the locking holes 24 of the above (Chinese power supply standard A-369).

As shown in FIG. 6, this support metal is loosened by loosening the mounting nut of the high-voltage insulator Ga mounted on the upper surface of the end portion of the armature A so that the gap between the upper surface of the armature A and the pin collar Gt of the high-voltage insulator is increased. The mounting plate 23 is inserted, the mounting pin is positioned so as to come to the innermost part in the center of the L-shaped locking hole 24, and the mounting pin of the high-voltage insulator Ga is tightened.
It is fixed to the end of.

[0005]

The above-mentioned conventional support metal is designed to loosen the attachment of the high-voltage insulator Ga, and once lift it to attach it to the end of the arm member A, so that the high-pressure insulator Ga supports it. Installation work is extremely dangerous when the high voltage distribution line is being charged.

Further, when the auxiliary metal fittings such as the live-wire twist strap S (see FIG. 2) are simultaneously attached to the armature A by using the attachment pins of the high-voltage insulator Ga,
Since the mounting space of the supporting hardware is insufficient, the supporting hardware cannot be mounted at the optimum position, and particularly when the twisting strap S for live wire is protruding to the side of the armrest A on a curved road, the strap S interferes and the supporting hardware is supported. Is difficult to install.

Moreover, when the high-voltage distribution line L vibrates due to strong wind or the like and the high-voltage insulator Ga is loosely attached, the above-mentioned support metal is loosely attached and gradually moves toward the end of the armor A, so that the arm 22 moves. Remove from arm A. When the arm 22 is disengaged from the armature A, the mounting plate 23 is placed on the armor A and becomes unstable (see the alternate long and short dash line in FIG. 6), and the mounting pin of the high voltage insulator Ga is attached. It becomes possible to rotate about the axis. In this case, the supporting metal piece starts to rotate right and left around the mounting pin, and finally the L-shaped locking hole 24 is disengaged from the mounting pin, and the supporting metal piece falls off the armature A.

Therefore, according to this invention, even if auxiliary metal fittings such as a twisting strap for live wire are simultaneously attached by the mounting pins of the high voltage insulator Ga without lifting the high voltage insulator Ga, the end portion of the armature A is It is an object of the present invention to provide a high-voltage draw wire support metal member that can be easily and safely attached to the armature and that does not fall off from the arm member A even if the attachment is loose.

[0009]

In order to solve the above-mentioned problems, the present invention relates to a high-voltage draw wire supporting metal object for suspending a supporting arm provided with an insulator on a lower surface of an end of a high-voltage arm member,
A frame-shaped forearm projecting above the supporting arm and fitted to an end of the armband, a projecting arm extending from the forearm, and an additional arm along the axial direction of the armband, and the armband. The U-shaped rear arm that is fitted so as to straddle from above and a fastener that is fastened over both arms of the rear arm below the armpiece constitute a high-voltage draw wire support hardware.

[0010]

The high-voltage underline support metal thus constructed is fitted to the end of the arm with the frame-shaped forearm and the rear arm sandwiching the high-voltage insulator provided at the end on the arm, and the rear arm Fasten to the arm with a fastener.

In this fastened state, the rear arm is on the rear side of the high-voltage insulator, and therefore, even if the rear arm is loosely attached, it cannot be pulled out of the arm. Further, since the fastener extends over both arms of the rear arm on the lower surface of the arm, the rear arm does not come off.

[0012]

Embodiment 1 In the embodiment shown in FIGS. 1 and 2, a strip is bent into a U-shape to form a frame-shaped forearm 1, a supporting arm 6, and a U-shaped rear arm 4, and the lower end of the forearm 1 is formed. The support arm 3 for supporting the insulator is welded to one end, and one end of the support arm 6 is welded to the middle portion of the forearm 1. The frame-shaped forearm 1 is externally fitted onto the arm A as an outer fitting portion 2 at a portion above the auxiliary arm 6.

A plurality of bolt insertion holes 7 are provided in the supporting arm 6 at appropriate intervals, and insertion holes 8 are provided at the lower ends of both leg portions 5 of the U-shaped rear arm 4, and the insertion holes 7 and 8 are used. The additional arm 6 and the U-shaped rear arm 4 are a bolt 9 and a nut 10 which are connecting tools.
I am fixing it with.

The lateral width la of the frame-shaped forearm 1 and the height h from the upper surface of the forearm 1 to the arm 6 are determined by the distribution pole P to be attached.
The gap lb between the forearm 1 and the U-shaped rear arm 4 according to the thickness widths of the side surface and the upper surface of the armor A is determined by using the high-voltage insulator Ga provided on the armor A or the mounting pin of this insulator Ga. If it is more than the width of the attached auxiliary metal fittings,
Adjust using the insertion hole 7.

Insulator installation holes 11 are provided in the support arm 3 at appropriate intervals. Further, it is preferable that the support arm 3 is provided on the forearm 1 with an inclination of 45 degrees so that the high-voltage insulator Gb to be installed is located below the outer side of the end of the armrest A.

Since the end portion mounting hole of the high-voltage insulator Ga provided on the upper surface of the arm member A is usually located 45 mm or 75 mm behind the tip of the end member, the end portion of the arm member A is normally used. Has a space for fitting the frame-shaped forearm 1 of the high-voltage draw wire support metal on the outside of the attached high-voltage insulator Ga.

When the outer frame portion 2 of the forearm 1 is fitted in this space and the insulator support arm 3 is hung, the support arm 6 follows the lower surface of the arm member A. In this state, a U-shaped rear arm 4 is externally fitted onto the armature A from the upper side on the rear side of the installation location of the high-voltage insulator Ga, and the lower ends of the both leg portions 5 of the rear arm 4 are brought into contact with the auxiliary arm 6 to attach the bolt insertion hole 7 , 8
If the bolt 9 is passed through and fixed by the nut 10, the high-voltage draw wire support metal fitting can be attached to the end of the arm A.

Also, the live wire torsion strap S or the like is simultaneously attached to the end portion of the armature A by the attachment pin of the high-voltage insulator Ga, and even when these are protruding to the side of the armature A, they are attached to the support arm 6. Since the through holes 7 are provided at appropriate intervals, by selecting the bolt through hole 7 for connecting the lower end of the leg portion 5 of the U-shaped rear arm, the twisting strap for live wire S is not hindered. Thus, the distance lb between the forearm 1 and the U-shaped rear arm 4 can be adjusted. Moreover, since the outer frame portion 2 of the forearm 1 and the U-shaped rear arm 4 are simply attached to the side surface of the armrest A, the twisting strap S for hot wire is used.
It is possible to easily and safely attach the high-voltage underline support metal member to the arm member A without interfering with the above.

In this way, when the high-voltage pull-down wire support hardware is attached to the armrest A, the rear arm 4 is located behind the high-voltage insulator Ga and the like, so that even if the attachment is loose, it will not come off from the armrest A, and the fastener Bolt 9 and nut 10 are rear arm 4
There is no possibility that the rear arm 4 will be pulled out by being fastened over both arms, so that there is no risk that the high-voltage pull-down wire support hardware will fall out of the arm A.

Further, in the state where the high-voltage underline D is supported,
The supporting arm 6 of the supporting metal acts as a lever with the shaft of the bolt 9 as a fulcrum, and the downward force applied to the tip of the supporting arm 6 changes upward at the rear end, and this rear end is strongly attached to the lower surface of the arm A. Press down. Therefore, even if the attachment by the bolts 9 and the nuts 10 is loosened, there is no possibility that the support fitting will further fall off the arm A.

The mounting hole for the high-voltage insulator Ga has a arm A.
In a curved road that is at a position of 45 mm from the tip of the wire and has an angle of 30 °, auxiliary metal fittings such as the live-wire twisting strap S are projected in front of the arm A, and the end of the arm A is almost Since there is no space for mounting the supporting hardware, the conventional supporting hardware cannot be mounted. However, in this embodiment, as shown in FIG. 3, even if the outer frame portion 2 of the forearm 1 cannot be fitted onto the end portion of the arm member A, the additional arm 6 is arranged along the lower surface of the arm member A, When the U-shaped rear arm 4 is externally fitted to the armor A from above on the rear side of the installation location of the high-voltage insulator Ga, and the lower ends of both leg portions 5 of the rear arm 4 are brought into contact with the accessory arm 6 and fixed by the bolts 9 and nuts. With the action of the lever, the rear end of the arm 6 acting as a point of action, the bolt 9 as a fulcrum, and the tip of the arm 6 acting as a force point, stable attachment is possible, and the support fitting does not fall off.

[0022]

[Embodiment 2] FIG. 4 shows another embodiment, in which two parallel supporting arms 6 and 6 are provided on both side surfaces Aa of the armature A, respectively.
One end is welded to the forearm 1 along the Ab.

A plurality of vertically long locking projections 12 are provided on the outer surfaces of the accessory arms 6 and 6 at right angles to the length direction. The distance between the locking projections 12 may be matched with the width of the leg portion 5 of the U-shaped rear arm.

In the high-voltage underline support metal fitting of this embodiment, when the outer frame portion 2 of the frame-shaped forearm 1 is externally fitted to the end portion of the armrest A and the support arm 3 is hung, two parallel arms are suspended. The supporting arms 6 and 6 are arranged along both side surfaces Aa and Ab of the arm A. In this state, a U-shaped rear arm 4 is externally fitted onto the armature A from the upper side on the rear side of the installation location of the high-voltage insulator Ga, and the side end edges of both leg portions 5 thereof are locked by one of the accessory arms 6. The lower ends of both leg portions 5 which are brought into contact with the protrusions 12 and protrude below the armor A are bolts 9 and nuts (not shown).
Fasten and install.

After mounting in this way, the U-shaped rear arm 4
Is restricted by the engaging protrusions 12 of the supporting arms 6 and 6, so that the U-shaped rear arm 4 can be secured even if the bolt 9 and the nut are loosely tightened.
The supporting arms 6 and 6 are not separated from each other, and there is no possibility that the supporting metal object may fall off the arm A for the same reason as described in the first embodiment.

When a plurality of bolt insertion holes are provided at appropriate intervals on the supporting arm 6 (not shown), the arm member A has a through hole through which the bolt 9 can be inserted on its side surface. Since there are many, the through-holes can be used to attach the supporting arms 6 and 6 to the armor A directly with the bolts 9 and nuts without using the rear arm 4.

[0027]

[Effects of the Invention] The high-voltage draw wire support hardware according to the present invention is
Since it is configured as described above, without twisting the high-voltage insulator attached to the upper surface of the end portion of the armband, and using the mounting pin of this high-voltage insulator, the twisted strap S for live wire or the like is attached to the end portion of the armband. Even if the auxiliary metal fittings are attached at the same time, they can be easily and safely attached to the end portions of the arms, and even if the attachment is loose, there is no risk of falling off the arms.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment.

FIG. 2 is a perspective view showing a state in which the arm A of the embodiment is attached.

FIG. 3 is a perspective view illustrating another method of attaching the armband A of the embodiment.

FIG. 4 is a partially enlarged perspective view showing another embodiment.

FIG. 5 is a perspective view showing wiring on a distribution pole.

FIG. 6 is a perspective view showing a conventional example in a state of being attached to the armband A.

[Explanation of symbols]

 1 Frame-shaped forearm 2 Outer frame part 3 Support arm 4 U-shaped rear arm 5 Leg part 6 Supplementary arm 7 Bolt insertion hole 8 Bolt insertion hole 9 Bolt 10 Nut 11 Insulator installation hole 12 Locking protrusion A Armband D High pressure Down line Ga High-voltage insulator Gb High-voltage insulator L High-voltage distribution line S S Torsion strap for live line P Distribution pole

Claims (1)

[Scope of utility model registration request] 1. A high-voltage draw wire supporting metal member for suspending a supporting arm provided with an insulator on a lower surface of an end portion of a high-voltage arm member, which is protruded above the supporting arm and is fitted to an end portion of the arm member. A frame-shaped forearm that is formed, a supporting arm that is provided so as to project from the forearm and that extends in the axial direction of the arm, a U-shaped rear arm that is fitted to the arm so as to straddle it from above, and the arm A high-voltage pull-down wire support hardware comprising a fastener that is fastened downwardly over both arms of the rear arm.