JPS6341712Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention is designed to prevent mistakes when operating multiple bypass switches connected to a bypass circuit when high-voltage distribution line construction is carried out without interruption using the bypass construction method. This relates to a safety confirmation tool that can be used to ensure safety.

Conventionally, the above-mentioned operation of the bypass switch has been carried out by a worker who is given a tablet by the foreman and told to operate it, goes to the switch to be operated, and reads the number attached to the switch. After confirming that the number matches the number on the tablet tag and operating the switch, the tablet tag is returned to the foreman.

However, with this method, there is a risk that if the worker makes a mistake in checking the number, the switch may be operated incorrectly, and on the other hand, the work supervisor has no control over which switch is turned on and which switch is opened. The problem is that it is difficult to grasp the actual situation.

Therefore, the present invention attempts to solve the above problems, and allows the worker to confirm the safety of the operation with high certainty, while also allowing the worker to confirm the safety of the operation. The purpose of this invention is to provide a safety confirmation tool that allows switches to be managed efficiently.

The drawings showing the embodiments of the present application will be described below. In FIG. 1, reference numeral 1 denotes a utility pole to which a plurality of scaffolding nails 2 are attached. Reference numeral 3 denotes a bypass switch fixed to the utility pole 1, to which a plurality of cables 4 constituting a bypass circuit are connected, as is well known. 5 indicates a lever for opening and closing operation. Reference numerals 6 and 7 indicate tow lines for opening and closing operations, respectively. Reference numerals 8 and 9 indicate handles for opening and closing operations of the safety confirmation tool, which are connected to tow ropes 6 and 7, respectively.

Next, Figures 2 and 3 are for these opening operations,
This figure shows the pulls 8 and 9 for the charging operation in detail. In these figures, reference numerals 10 and 11 indicate towline connecting portions, respectively, and through holes 10a and 11a are bored therein through which the towlines 6 and 7 can be inserted, respectively. Reference numerals 12 and 13 are markings attached to the outer peripheral surfaces of the respective pulls 8 and 9 to indicate that the pulls are for opening or closing operations, respectively. 14,15
is the code attached to the outer circumferential surface of the handles 8 and 9.
These pulls 8 and 9 have the same reference numerals as those of the switch 3 to which they are attached. The code of the switch 3 is a code given to each switch in order to distinguish between the plurality of switches 3 used in the bypass construction method, and this code is different for each switch. Reference numeral 16 denotes a holding part molded only on the pull handle 9 for loading operation, and a through hole 1 bored in the bottom of the pull handle 9.
7, and a female thread 18 carved in a part of the inner peripheral surface of the through hole 17. This female screw 18
is formed in such a way that the external thread at its connecting portion can be screwed into only the tablet with the same reference numeral 15 attached to this handle 9 among a plurality of tablets to be described later. The handles 8 and 9 described above are made of glass fiber-containing resin or a material of equivalent or higher quality, and are formed so that they are free from defects such as scratches, cracks, and cracks, and are not easily damaged by impact. Ru.

Next, 19 is a tablet among safety confirmation tools.
The same number of switches as the number of switches are prepared. In this tablet 19, 20 is a main body, and 21 is a connecting portion, which are integrally formed using the same material as the pullers 8 and 9. 22 is the main body 2
0, and this code 22 is made to match only the code given to only one switch among the plurality of switches. Further, the reference numeral 22 is different for each tablet 19, as shown in FIG. Reference numeral 23 indicates an insertion rod in the connecting portion 21, which is formed in a thickness that can be inserted into the through hole 17.
Reference numeral 24 denotes a male screw, which has a different diameter and pitch for each tablet, as shown in FIG. Note that this may be made such that only one of them is different.

Next, in FIG. 5, 25 indicates a storage body in the safety confirmation tool. In this storage body 25, 26
The board is made of a weather-resistant plate material, and a hanging string 27 is connected to a part of the board so that it can be carried around the user's neck. 28
1 is a storage section attached to the substrate 26, and a through hole 29 is formed from the top surface of each storage section into which the connecting section 21 of the tablet 19 can be inserted. ing. As is clear from the figure, the numerals 30 are different from each other, and each corresponds to the numeral assigned to only one of the plurality of tablets 19. Incidentally, each of the above-mentioned through holes 29 may be formed with a female thread into which only the male thread 24 of the corresponding tablet 19 can be screwed. 31
6 shows a circuit diagram of a bypass method in which the circuit board 26 is fixed to the board 26 with a fastener 32, and for example, a circuit diagram as shown in FIG. 6 is shown. In the circuit diagram shown in FIG. 6, 1, 1, . . . are the above-mentioned utility poles, 42 is a high-voltage distribution line, 43 is a power source side thereof, and 44 is a load side thereof. 45 indicates a high voltage branch line. 46 is a lead-in switch, 47 is a high-voltage private lead-in, 48 is a high-voltage cutout, and 49 is a pole transformer. Next, in the bypass circuit 50,
4, 4... are the bypass cables mentioned above, and a plurality of bypass switches 3, 3... are interposed therein. These bypass switches are respectively labeled with numerals "1", "2", . . . "5" as shown, for example. Reference numerals 52, 52, . . . indicate branch bodies, and 53 indicates a cable terminal with a current limiting fuse.

Next, how to use the safety confirmation device having the above configuration will be explained. First, in a state where all the bypass switches 3, 3, . . .
is stored in. Then, the foreman of the bypass construction, while looking at the circuit drawing 31, orders the worker to turn on the switch 3 marked with the symbol "2", and hands him the tablet 19 marked with the symbol "2". The worker who received the tablet 19 goes to the corresponding switch 3 and first compares the code 22 of the tablet 19 he received with the code 15 of the handle 9 attached to the switch 3. If these numbers 22 and 15 both match "2", then insert the insertion rod 23 of the tablet 19 into the through hole 17.
the male screw 24 and the female screw 18. If the screwing is done correctly, the handle 9
Pull the button to close the switch 3. After completing the operation, the worker returns to the foreman and reports the completion of the operation.

By performing the operations as described above, the working manager can change the switches 3 from "2" to "5" by simply looking at the storage body 25 in the state shown in FIG. 5, for example.
Since there is no tablet 19 left, it can be seen that the tablet 19 is in the inserted state, and the switch 3 of "1" remains open.

Next, when the opened switch 3 is opened, for example at the end of the work, the tablets 19 of the opened switch 3 are sequentially returned to the working leader, and the tablets 19 are
9 is stored in the storage section 28 again.

In this embodiment, the coupling part 21 and the holding part 16 are made to match each other by screwing the male thread 24 and the female thread 18, but this is not limited to screws, but can also be applied to round, triangular, etc. rods. Mutual correspondence may be achieved by matching the shapes, such as the bodies and round, triangular, etc. fitting holes that allow these rod bodies to be fitted individually.

Next, in FIG. 7, reference numeral 55 indicates an operation prohibition tag, which is composed of a tag body 56 and an attachment band 57. For example, on the surface of this bill body 56, there is written a message such as “Working in progress.
A warning such as "Operation prohibited" will be displayed to prevent erroneous operation. Furthermore, the length of the attachment band 57 is adjustable so that it can be adapted to utility poles of various diameters.

Such an operation prohibition tag 55 is used by being attached to the utility pole 1 to which the operated switch 3 is attached, as shown in FIG.

As described above, in this invention, the tablets 19 are each given a different code, while the pulls 9 for operating the bypass switch 3 are each given a different code. and their codes are made to match only the code 22 attached to only one tablet 19 among the plurality of tablets 19. Therefore, from the working length to the tablet 19
When a worker who is given a ``handle'' and instructed to pull the handle 9 goes to the switch 3 he was instructed to operate and operates the handle 9 attached to the operating part of the switch 3, the operator By matching the code 9 with the code on the tablet 19, the handle 9 of the switch 3 (not the handles of other switches) can be operated as instructed, ensuring safety. There is a usefulness that can be confirmed.

Moreover, in such a case, when trying to pull the handle 9, the connecting part 21 of the tablet 19 should be pulled from the handle 9.
Even if the above codes are incorrectly matched, the connecting part 21 of the tablet 19 will not match the holding part 16 of the handle 9, so the operator must This has the effect of making the above-mentioned safety confirmation even more reliable.

On the other hand, on the working length side, the storage body 25 is provided with a number of storage sections 28 for storing tablets corresponding to the number of tablets 19, and each of these storage sections 28 can store only one tablet 19. Since the code that matches only the code assigned to the storage unit 28 is different from the code assigned to each storage unit 28, the tablet 19 is assigned to each storage unit 28.
It is possible to infer the closed state of each switch 3 by checking whether it is present or absent, and even if there are a large number of switches, there is an advantage that they can be centrally managed and high management efficiency can be achieved. .

Furthermore, since the storage body 25 has the above-described configuration, when the above-mentioned work is completed, the entire work can be ensured by making sure that all the tablets 19 have been returned to the corresponding storage section 28. There is a feature that allows you to confirm that the process has been completed.
Furthermore, after finishing the work, those tablets 19
can be stored and managed in the storage section 28, and there is an advantage that even if the tablet 19 is carried individually as described above, it can be stored reliably without losing it.

[Brief explanation of drawings]

The drawings show an embodiment of the present application, and FIG. 1 is a schematic perspective view showing the installation state of the bypass switch, and FIG.
The figure is a front view of the release handle, Figure 3 is a partially cutaway front view of the input handle with the tablet attached, Figure 4 is a front view of the tablet, Figure 5 is a perspective view of the storage body, FIG. 6 is a circuit configuration diagram of the bypass construction method, FIG. 7 is a perspective view of the operation prohibition tag, and FIG. 8 is a perspective view showing the state in which the operation prohibition tag is attached. 3... Bypass switch, 9... Pull, 16...
Holding part, 15... Code, 19... Tablet, 2
1... Connecting part, 22... Code, 25... Storage body,
28... Storage department, 30... Code.

Claims (1)

[Scope of utility model registration request] In a safety confirmation device used when operating a plurality of bypass switches, the safety confirmation device corresponds to a plurality of pulls attached to each operating section of the plurality of bypass switches and the number of the pulls. a storage body capable of storing the plurality of tablets; each of the plurality of tablets has a different code and a connecting part; , each of the plurality of pulls has a different code attached to each pull, and these codes match only the code attached to only one of the plurality of tablets. Furthermore, each of the plurality of pulls can only be connected to the connecting part of a tablet with a code that matches the code attached to each handle, and cannot be connected to the connecting part of a tablet that has a different code. Further, the storage body includes a plurality of storage portions, the number of which is equal to the number of the tablets, and each storage portion is configured to individually store the tablets. Furthermore, each storage section is given a different code, and these codes match only the code given to only one of the plurality of tablets mentioned above. A bypass switch operation safety confirmation device characterized by: