JPS5899209A - Method and device for grounding transmission line from top of transmission iron tower - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for grounding a power transmission line from above a power transmission tower.

It is well known that when performing power outage work on power transmission lines, it is necessary to ground the power lines in advance to prevent electric shock. Conventionally, when grounding a power transmission line from the top of a power transmission tower, an electrical insulating rod was projected from the top of the tower toward the power transmission line, its horn, or spacer (hereinafter referred to as the "power line, etc."), and the wire was placed at the tip of the insulating rod. The metal fittings were used to hold power transmission lines and ground them. However, since the distance from the top of the power transmission tower to the power lines, etc. is quite long, insulating rods must be used, and it is not easy to transport these to the site, especially in mountainous areas. Moreover, workers must carry long and heavy insulating rods on their backs to move up and down the tower, which inevitably increases the labor burden on workers. Furthermore, it is difficult to manipulate long straight insulation rods on the tower.

The present invention has been made with the aim of eliminating the above-mentioned conventional drawbacks and reducing the labor burden on workers when grounding power transmission lines from the top of a power transmission tower. The basic feature of this invention is that an electrically insulating cable such as an electrically insulating chain or a lobe is used in place of the conventional insulating rod. Unlike insulating rods, cables such as chains and lobes can transmit force by pulling, but cannot achieve force by pushing. Therefore, with only one cable, although it is possible to displace the metal fitting in one direction and grip the power transmission line, it is not possible to displace the metal fitting in the opposite direction and release the grip. . However, if two cables are used, it is possible to pull them alternately so that the fitting can be displaced in one direction and in the opposite direction. This invention was made by focusing on the button.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In the figure, a power transmission tower (3) K is supported by a power transmission line (11). Two electrically insulating cables f41 (51), a retaining hook (6) and a holding metal fitting (7) are used for grounding the power transmission@(1).

The hook (6) is suitable for suspending the power transmission line (11 etc.) and is suitable for suspending the power transmission line (11 etc.), and as shown in Fig.
It consists of a main body (91) and a movable arm αα connected by a pin (91) and a movable arm αα.
When rotated to the position indicated by the line, the power line (1)
etc. can be accommodated between the main body (9) and the movable arm (101).

The presser metal fitting (7) is used to press and hold the power transmission line (1), etc. with the suspension hook (6) held, and is movably attached to the hook (6). In this large example,
The metal fitting (7) is rotatably attached around a support pin aυ provided on the hook (61).

When the metal fitting (7) is rotated counterclockwise around the support pin [111 to the position shown by the chain line, the power transmission line (1)
It is possible to hold and hold objects such as objects. When the metal fitting (7) is moved one time clockwise around the support pin (■) to the position indicated in alphabetical letters, the grip on the power transmission line (1) etc. can be completely released. At this time, the metal fitting (7) contacts the stopper L121 vc provided on the hook (6) and stops.

Presser foot X (7) is biased by tension spring 0. Both ends of the spring U are connected to the spring pins α4゜151 provided on the presser fitting (7) and the hook (6).
It has been suspended. Suzu ring pin A, presser foot A (
7) and rotates around the support pin housing in the same direction. When the presser foot A (7) is in the position shown by the chain line, its spring pin t141 is on the left (1111
will be placed in Therefore, the presser foot A f71 is urged counterclockwise around the support pin [11 by the spring a3, and presses and grips the power transmission line fil, etc. On the contrary, when the presser foot X (7) is in the position shown by the line, its spring pin α4 is placed in the classic line (1). Therefore, the holding fitting (7) is biased clockwise around the support pin rL11 by the spring 131, and the power transmission line (11, etc. 0 grip is released.The spring pin (141) is placed on the straight line (1). , that is, when the straight line m (m) passing through the subring pin I and the support pin [111] overlaps the straight line (7), the presser metal fitting (7) is not biased neither clockwise nor counterclockwise.

The presser metal fitting (7) has a dead center at this position.

In this English example, 'W! , gas insulating chains (4a), (5a) with ropes (4b), (5b) attached to both upper and lower ends are used. Chain (4a), (5'a), Rho 7-(4b
The inlet (5b) is molded from a plastic material or the like.

The chains (4a) and (δa) are connected by a plurality of slope-stops to maintain the spacing.

Cables (4), (upper end of 51 - 1 (4b), (5b)
for.

The loafs (4b) and (5b) at the lower end are fitted with a presser metal fitting (71K Q) and a bush (Q81) rotatably attached to the lower end loaf (4b), (5b).
They are passed through 19 holes, tied, and connected. The bush α9 is arranged on the straight line M(m).

A guide 7°-ri is used as a cable guide for guiding the two cables (4) and (5). The guide fly is rotatably supported around a support pin Q11 provided on the engagement hook (6).The support pin 21 is arranged on the straight S The ropes (4b) and (5b) of (4) and (5) are engaged with the guide tree from both the left and right sides.Therefore, one of the ropes (4b) and (5b)
), the presser metal fitting (7) moves counterclockwise around the support pin u11 from the position indicated by the solid line @II!
If you pull the other cable (5),
Move presser foot A (7) from the position indicated by the chain line to the support pin (
It can be moved clockwise around 111.

The ropes (4b), (5b) of each cable 14), ]5) are
A pair of spacing pulleys (23
, of the direction changing pulley that changes direction, and of the auxiliary pulley c! The one-spacing boolean guided to the guide 1-ri through the guide 4 is pivotally supported by a support pin provided on a pair of guide horns, and the horn (c) is fixed to the hook (6). .

Next, a method of grounding the power transmission line (1) using this device will be explained. First, as shown in Fig. 8, attach the voltage detector port to the engagement hook (6) with a butterfly nut, etc., and then attach the cable cord (41, (5)
) to hang down to the position of the hook (6), presser metal fitting (7), voltage detector @ all power transmission lines (1), etc. Then, by shaking this, the voltage detector port is brought into contact with the power transmission line (1), etc., and the power transmission line (1), etc. is discharged.

Next, hook (6), presser metal fitting (7) and voltage detector □
□□ up to the top of the transmission tower (3), and replace the voltage detector (2) with the hook (6) K as shown in Fig. 1θ.
Attach one end of the lead kneaded ball. Then, the other end of the lead wire 4 is connected to the power transmission tower (3) using a ground metal wire.

After that, the hook (6) and the presser fitting (7) are suspended by the cables (4) and (5) to the position of the power transmission M (1), etc., and the hook (6) is sent to 1 IC! 1! +11 etc. from below, and the power transmission @l fi+ etc. is accommodated between the main body (9) of the hook (6) and the movable arm a0.

When the hook (6) and presser fitting (7) are hung down, the spacers t1e of the cables (4) and (5) are connected to the chains (4a) and (5a).
), and the guide horn (c) holding pulley (
221 maintains the distance between the ropes (4b) and (5b).

Therefore, rotation of the hook (6) and presser metal fitting (7) can be prevented, and the angle of the hook f61 can be easily adjusted. Further, the upper end of the guide horn (C) is curved, and is used to guide the power transmission line (1) and the like. Therefore, the main body (9) of the hook (6) connects the power line (11 etc.)
and movable arm αG.

After storing the power transmission line (11 etc.), pull one cable (4) upward and apply force to the holding metal fitting (counterclockwise around the support pin +tn from the release position shown by the protruding line in Figure 8). When the presser metal fitting (7) passes its dead center, it is urged counterclockwise by the spring I around the support pin αυ, that is, to the gripping position shown by the chain line in FIG. , hold down the power transmission line (1), etc. Therefore, it is possible to hold the power transmission line (11) etc.
hook (61), presser metal fitting (7) and lead iI@
It is grounded to the steel tower (3) K via. After gripping the power transmission Mil+, etc., each cable (4), (5) is attached to its clip α.
7) Just connect it to the steel tower (3) by K.

After completing 4Tq, pull the other cable (5) upwards. Using Jj' IIr, rotate the presser fitting (7) clockwise from the gripping position. . Presser metal fittings (A) ¥1,000. After passing the dead center, the ring I moves clockwise around the support pin 11 and comes into contact with the stopper [121]. Shikatsu”T,,’,=f, after D, the cable (5)
Even if you loosen the hook (7), it will remain in the PR position.
can be easily removed from the

Of the two cables (4), (5), to identify the cable (4) or (5) that is pulled upward, select the cables t41, (5).
) on each of the cables (4) and (5) of the sveza ('Ie), for example, one cable (4) has a blue color,
You can mark the other cable (51 side in red).Others.

Various methods are possible.

In some cases, as shown in FIGS. 1 and 11, the hook (6) may be attached to the power transmission line (11) using the support rod G1.

Strands (4a), (5a) of cords (4), (5), loaf
(4b) and (5b) are light and can be bundled into a compact size, so they can be easily transported to sites such as mountainous areas, and they can also be easily used to go up and down power transmission towers (3). It is. Cord (4), (51 strands (4a),
(5a), rows 1 (4, b), and (5b) may be bundled together and placed in a bag together with the hook (6), and the pack may be carried while climbing the steel tower (3). 3) Easy to operate on top. Therefore, the labor burden on the worker can be significantly reduced.

As explained above, this invention uses electrically insulating cables made of electrically insulating chains, rows, etc. in place of conventional insulating rods, so workers can easily It was possible to reduce the labor burden and achieve the intended purpose.

[Brief explanation of the drawing]

Fig. 1 is an explanatory view showing one embodiment of the present invention, Fig. 2 is a front view of the rope, suspension hook, and lead wire shown in Fig.
@ is an enlarged front view of the locking hook in Fig. 2, Fig. 4 is a left side view of Fig. 8, Fig. 5 is a right side view of Fig. 8, and Fig. 6 is an enlarged front view of the locking hook in Fig. 8.
The WrJT diagram is a front view of the voltage detector, Figure 8 is the right side view of Figure 7, Figure 9 is a front view of one end of the lead wire, and Figure 10 is the 9th Right side view of the figure,
FIG. 11 is a front view showing the support rod of FIG. 1. +11----1 power transmission line+31----1 power transmission tower+41. (51--1 Electrical insulating rope (61--1 Stopping hook (71--1 Holding metal fitting u3--Spring)--Guide pulley (2)-1 111 Lead line Figure 1 Figure 2 Procedural amendment (2: July 7, 1980 Director General of the Patent Office 1, Indication of the case 1988 Patent Application No. 1958σ 1,
Title of the invention: Method for grounding power transmission lines from the top of transmission towers
3. Relationship with the case of the person making the amendment Patent applicant name Chubu Electric Power Co., Ltd. 4 Agent 1 person outside 604' 6. Number of inventions increased by the amendment Contents of the amendment as shown in the attached sheet 111 Specification, No. 11N, line 4, “Spring [1
41" is corrected to "Spring a31J. +21 As shown in the attached corrected drawing, the symbol (
7) is corrected to αα, and the symbol in FIG. 11 is corrected to αα. Catalog of documents attached to Suga

Claims (2)

[Claims] (1) To the presser metal fitting that is movably attached to the retention hook,
Connect two electrically insulating cables made of electrically insulating steel, lobes, etc., and use the cables to transmit power from the top of the transmission tower to the position of the hook and holding fitting [or its horn, spacer (hereinafter referred to as power transmission line, etc.)] After hanging the hook and engaging the power transmission line etc. from below, one of the cables is pulled upward to displace the holding metal fitting in one direction and press the power transmission line etc. with the holding metal fitting, A method for transmitting power from above a power transmission tower, characterized in that the holding metal fitting is displaced in the opposite direction by gripping the wire and, after completing the work, pulling the other cable upwardly, thereby releasing the grip on the power transmission line, etc. , How to do Kura Shuji. (2) An engagement hook suitable for engaging a power transmission line or its horn or spacer (hereinafter referred to as a power transmission line, etc.), a presser metal fitting that is movably attached to the above-mentioned hook, and a presser metal fitting that The power transmission line, etc. that is engaged with the engaging hook can be pressed and gripped by pressing in the opposite direction, and the grip on the power transmission line, etc. can be released by pressing the holding metal fitting in the opposite direction. two electrically insulating cables made of electrically insulating steel, loaf, etc., connected to the presser metal fitting; and a cable that guides the two cables and pulls one of the cables. A power transmission line is grounded from above a power transmission tower consisting of a cable guide that allows the holding metal fitting to be displaced in one direction by pulling the other cable, and displaces the holding metal fitting in the opposite direction by pulling the other cable. Device.