JP4757114B2 - Lock bill indicator - Google Patents

Description

  The present invention relates to a locked bill indicator, and more particularly to a locked bill indicator suitable for indicating that a line switch for opening and closing a power transmission path is locked in an open state.

  Conventionally, when work is performed at a power plant or substation, the work site is blacked out by opening the line switch. During the power outage work, the line switch is electrically or mechanically fixed (locked) in order to ensure the safety of workers. In addition, by attaching a display tag indicating that it is locked to the line switch, it is safe to let the worker recognize that it is locked and not accidentally turn on the line switch. Measures are taken.

  For this reason, when performing a lock operation, workers must carry a key to lock the display tag on the premises such as a power plant, and there are many line switches to be locked at interconnection substations. There are cases where ten sets of display tags and keys are carried around, which is very cumbersome and requires time for installation and removal.

In the following Patent Document 1, a display portion for displaying the open / close state of the switch body is provided at one end, the other end is connected to the open / close drive portion of the switch by a tension coil spring, and the central portion can be rotated about a shaft. An open / close indicator for a switch is disclosed, which comprises an open / close display plate attached to the switch, and transmits the driving force of the open / close drive unit via a tension coil spring to rotate the open / close display plate.
JP 2000-236603 A

  However, the open / close indicator disclosed in the above-mentioned Patent Document 1 indicates the open / closed state of the switch, and does not indicate the locked state. This open / close indicator always indicates either the open or closed state, but in the normal unlocked state, the display indicating the state is unnecessary, and this is used as it is. It is not possible. Furthermore, in order to use this switch indicator for an existing line switch, it is necessary to modify the lock mechanism of the line switch, which is expensive and troublesome.

  An object of the present invention is to provide a locked bill indicator that can be installed with minimum cost and effort and that can easily display a locked state of a line switch.

The locked bill indicator of the present invention is a locked bill indicator that indicates that the line switch that opens and closes the power transmission path is locked in the open state, and has an indication that it is locked. And a support portion that supports the display plate so that the orientation of the display plate changes in conjunction with an operation lever attached to the track switch so as to be rotatable between an unlock position and a lock position. comprising the operating lever is not displayed in the display panel is visible when in the unlocked position, as when the operating lever is in the locked position seen displays of the display panel, wherein the said support part It is attached to an operation lever.
Here, the support portion includes a connection fitting (3) having an inverted U-shaped cross section, and the display of the display plate (2) faces the opening side of the connection fitting on the fixing surface (5) of the connection fitting. as has side of the display panel is fixed, the operating lever (13) is configured to be rotatable in the vertical direction, the lock in label indicator (1) is, the operating lever is the locking when in the release position faces the display plate ground side, so that the display panel when the operating lever is in the locked position face the front side of the line switches (10), wherein the said support part It may be attached to the operation lever.
The support portion includes a connection fitting (23) having a U-shaped cross section, and the display of the display plate (22) faces the opening side of the connection fitting on the fixing surface (25) of the connection fitting. are fixed for the bottom of the display panel, the operating lever (33) is configured to be rotatable in a horizontal direction, the lock in tag display (21), the operating lever is in the unlocked position as the display panel is hidden on the back side of the line switches, when the operating lever is in said locked position appears in a state where the display panel is facing the front side of the line switch when the support portions May be attached to the operation lever.
The support portion includes a connection fitting (43) having an inverted U-shaped cross section, and the display of the display plate (42) faces a direction perpendicular to the opening of the connection fitting on the fixing surface (45) of the connection fitting. as has bottom surface of the display plate is fixed, the operating lever (53) is configured to be rotatable in a horizontal direction, the lock in label display (41), said operating lever is the locking when in the release position the panel is facing the rear of the line switch, so when the operating lever is in the locked position face the front side of the display panel is the line switch, the support May be attached to the operation lever.
The display plate (82) may be inclined with respect to both side surfaces (85, 88) of the connection fitting (83).
The support portion includes a connection fitting (63) having an inverted U-shaped cross section and a flat plate (69), and the display plate (62) is rotatably attached to the flat plate (69). A rotation limiting portion (62a) is provided on a side surface perpendicular to the display on the display plate, and the display on the display plate is perpendicular to the opening of the connection fitting on the fixing surface (65) of the connection fitting. to face a direction, wherein and flat plate is secured, the lock in label display (61) is, when the operating lever is in the unlocked position is located on the rear side of the display panel is the plate as the panel emerges from the back of the plate when the operating lever is in the locked position, it may be attached to the operating lever by the supporting portion.

The locked bill display of the present invention has the following effects.
(1) It is a simple configuration comprising a display board having an indication that it is locked, and a support part that supports the display board so that the direction of the display board changes in conjunction with the operation lever of the line switch. Therefore, it can be installed with minimal cost and labor for the existing line switch.
(2) The direction of the display board is set so that the display is not visible when the operating lever is in the unlocked position and the display is visible when the operating lever is in the locked position. By simply setting the lock state, the locked display can be automatically recognized.
(3) It is not necessary for the worker to carry a display tag or the like, and the locked state of the line switch can be displayed easily.
(4) Since the display cannot be seen when the line switch is not in the locked state, there is no display of “locking”, and erroneous display due to forgetting to remove the conventional display tag can be prevented.

  The purpose of the installation is to minimize the cost and effort and to display the locked state of the line switch easily. When the operating lever is in the unlocked position, the indication on the display board is not visible, but the operating lever is in the locked position. In order to be able to see the display on the display board, the locked bill indicator is attached to the control lever by the support.

Embodiments of the locked bill indicator of the present invention will be described below with reference to the drawings.
As shown in FIG. 1, the locked bill display device 1 according to the first embodiment of the present invention has a display board 2 having a display (character 4) indicating that it is locked, and a support for supporting the display board 2. And a connection fitting 3 functioning as a part.

On the display board 2, a character 4 "locked" indicating that the lock is in progress is displayed.
The connection fitting 3 is a fitting having an inverted U-shaped cross section. On one side surface of the connection fitting 3 (hereinafter referred to as “fixed surface 5”), the character display surface (the surface on which the character 4 is displayed) of the display plate 2 is the fixed surface 5 of the connection bracket 3 and the other side surface 8. The side surface of the display panel 2 is fixed by welding or an adhesive so as to face the opening side between the two. The locked bill indicator 1 is connected as shown in FIGS. 2 and 3 by screwing two screws 7a and 7b into two screw holes 6a and 6b provided in the fixing surface 5 of the connection fitting 3, respectively. After one side surface of the U-shaped operation lever 13 of the line switch 10 is sandwiched in the opening of the metal fitting 3, the two screws 7 a and 7 b are tightened to attach the operation lever 13 to the operation lever 13.

  Here, as shown in FIG. 2, the line switch 10 includes a main body 11 having a built-in switchgear (not shown), an operation rod 12 connected to the switchgear in the main body 11 to perform a switching operation, and a switchgear. And an operation lever 13 for locking the door to the open state and releasing the lock. The operation lever 13 is attached to the operation rod 12 via a hinge 14 so as to be rotatable in the vertical direction.

  In the unlocked state of the line switch 10, the operation lever 13 is tilted horizontally, so that the display board 2 of the locked bill indicator 1 attached to the operation lever 13 also falls horizontally, and the character 4 on the display board 2 Facing the ground. For this reason, the character 4 of the display board 2 cannot be visually recognized from the front direction of the track switch 10.

  On the other hand, in the locked state of the line switch 10, as shown in FIG. 3, the operation lever 13 is rotated vertically with the hinge 14 as a rotation shaft and is vertically set, so that the display attached to the operation lever 13 The plate 2 also rises vertically, and the character 4 on the display plate 2 faces the front. For this reason, since the character 4 of the display board 2 can be seen from the front direction of the line switch 10, the worker knows that the line switch 10 is locked.

Next, a locked bill display device according to a second embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 4, the locked bill indicator 21 according to the present embodiment includes a display plate 22 having a display indicating that the lock is being performed, and a connection fitting 23 that functions as a support portion that supports the display plate 22. It has.

On the display board 22, a character 24 "locked" indicating that the lock is in progress is displayed.
The connection fitting 23 is a fitting having a U-shaped cross section. On the upper surface portion of the connection fitting 23 (hereinafter referred to as “fixing surface 25”), the character display surface of the display plate 22 faces the opening side between the fixation surface 25 of the connection fitting 23 and the other side surface 28. As described above, the bottom surface of the display panel 22 is fixed by welding or an adhesive. The lock bill indicator 21 is connected as shown in FIGS. 5 and 6 by screwing two screws 27a and 27b into two screw holes 26a and 26b provided in the fixing surface 25 of the connection fitting 23, respectively. After the tip of the operation lever 33 of the line switch 30 is sandwiched between the opening of the metal fitting 23, the two screws 27a and 27b are tightened to attach the operation lever 33 to the operation lever 33.

  Here, as shown in FIG. 5, the line switch 30 includes a main body 31 including a switchgear (not shown), an operation bar 32 connected to the switchgear in the main body 31 to perform a switching operation, and a switchgear. And an operation lever 33 for locking the door to the open state and releasing the lock. The operation lever 33 is connected to the main body 31 via a support member 34 so as to be rotatable in the horizontal direction.

  In the unlocked state of the line switch 30, as shown in FIG. 5, the front end portion of the operation lever 33 is located behind the operation rod 32, so that the locked bill indicator attached to the front end portion of the operation lever 33. 21 is also hidden behind the operation rod 32. For this reason, the character 24 of the display board 22 cannot be visually recognized from the front direction of the track switch 30.

  On the other hand, in the locked state of the line switch 30, as shown in FIG. 6, the operation lever 33 is rotated in the horizontal direction, so that the locked bill indicator 21 attached to the operation lever 33 is also in the horizontal direction. The character 24 of the display board 22 faces the front side. For this reason, since the character 24 of the lock state indicator 21 can be seen from the front direction of the line switch 30, the worker knows that the line switch 30 is locked.

Next, a locked bill display device according to a third embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 7, the locked bill indicator 41 according to the present embodiment includes a display plate 42 that indicates that the lock is being performed, and a connection fitting 43 that functions as a support portion that supports the display plate 42.

On the display board 42, a character 44 "locked" indicating that the lock is in progress is displayed.
The connection fitting 43 is a fitting having an inverted U-shaped cross section. On the upper surface of the connection fitting 43 (hereinafter referred to as “fixed surface 45”), a display is made so that the character display surface of the display plate 42 faces the direction perpendicular to the opening between both side surfaces of the connection fitting 43. The bottom surface of the plate 42 is fixed by welding or an adhesive. Further, the locked bill indicator 41 has two screws 47a and 47b screwed into two screw holes 46a and 46b provided on one side surface of the connection fitting 43, respectively, as shown in FIGS. In addition, the two screws 47 a and 47 b are respectively clamped with the operation lever 53 sandwiched between both side surfaces of the connection fitting 43, thereby being attached to the operation lever 53.

  Here, as shown in FIG. 8, the line switch 50 includes a main body 51 having a built-in switchgear (not shown), an operation rod 52 that is connected to the switchgear in the main body 51 and performs a switching operation, and a switchgear. And an operation lever 53 for locking the door to the open state and releasing the lock. The operating lever 53 is connected via a connecting shaft 54 so as to be interlocked with the operating rod 52 so as to be rotatable in the horizontal direction.

  In the unlocked state of the line switch 50, as shown in FIG. 8, the operation lever 53 is positioned on the operation bar 52 side, and the locked bill indicator 41 has the character display surface of the display board 42 of the line switch 50. It is attached to the operation lever 53 so as to face the side. For this reason, the character 44 cannot be visually recognized from the front direction of the track switch 50.

  On the other hand, in the locked state of the line switch 50, as shown in FIG. 9, the operating lever 53 is rotated about 180 degrees horizontally around the connecting shaft 54 and in the opposite direction to the operating rod 52. Thereby, the display board 42 attached to the operation lever 53 also rotates about 180 degrees in the horizontal direction, and the character display surface of the display board 42 faces the front side. For this reason, since the character 44 of the display board 42 can be seen from the front direction of the line switch 50, the worker knows that the line switch 50 is locked.

Next, a locked bill indicator according to a fourth embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 10, the locked bill indicator 61 according to the present embodiment includes a display plate 62 indicating that the lock is being performed, and a connection fitting 63 and a flat plate 69 that function as a support portion that supports the display plate 62. It has.

The display board 62 displays a character 64 “locking” indicating that the lock is in progress.
The display plate 62 is attached to the flat plate 69 at a lower portion thereof so as to be rotatable about the pin 69a as a rotation axis. Further, a rotation restricting portion 62 a is provided on the left side surface of the display plate 62 in the direction perpendicular to the character display surface of the display plate 62. Accordingly, the display plate 62 is supported by the flat plate 69 so as to stand upright when the lower surface of the rotation limiting plate 62a contacts the upper surface of the flat plate 69.

  The connection fitting 63 is a fitting having an inverted U-shaped cross section. A flat plate 69 is fixed to one side surface of the connection fitting 63 (hereinafter referred to as “fixing surface 65”) by welding or an adhesive. As shown in FIGS. 12 and 13, the locked bill indicator 61 is configured such that two screws 67 a and 67 b are screwed into two screw holes 66 a and 66 b provided on the other side surface 68 of the connection fitting 63, respectively. The two screws 67a and 67b are fastened with the one side surface of the operation lever 73 sandwiched between the opening of the connection fitting 63 and attached to the operation lever 73.

  As shown in FIG. 11, in the unlocked state of the line switch 70, the display board 62 is in a position on the back side of the flat plate 69 rotated about 90 degrees around the pin 69a from the upright state shown in FIG. is there. Thereby, as shown in FIG. 12, the character 64 of the display board 62 cannot be visually recognized from the front side of the track switch 70. FIG.

  Here, as shown in FIG. 12 and FIG. 13, the line switch 70 includes a main body 71 having a built-in switchgear (not shown), and an operation rod 72 that is connected to the switchgear in the main body 71 and performs a switching operation. The operation lever 73 that locks the opening / closing device in the open state or releases the lock, and the support member 74 are provided. The operation lever 73 is connected to the main body 71 via the support member 74 so as to be rotatable about 180 degrees about the support member 74 as a rotation axis.

  In the unlocked state of the line switch 70, the operation lever 73 is located on the front side of the operation bar 72 and the display board 62 is located on the back side of the flat plate 69, as shown in FIG. It is hidden behind the lever 73. For this reason, the character 64 of the display board 62 cannot be visually recognized from the front direction of the track switch 70.

  In the locked state of the line switch 70, as shown in FIG. 13, the operation lever 63 is rotated about 180 degrees in the direction opposite to the operation rod 72, so the locked bill indicator 61 together with the operation lever 73 is also about 180 degrees. It is rotated. At this time, the display board 62 also stands upright by rotating about 90 degrees about the pin 69a as a rotation axis, so that the display board 62 appears from the back surface of the flat plate 69 with the character display surface facing the front side. Thereby, the character 64 of the display board 62 can be visually recognized from the front side of the track switch 70, and the worker knows that the track switch 70 is locked.

Next, a locked bill indicator according to a fifth embodiment of the present invention will be described with reference to FIG.
As shown in FIG. 14, the locked bill display device 81 according to the present embodiment includes a display plate 82 that indicates that the lock is being performed, and a connection fitting 83 that functions as a support portion that supports the display plate 82.

On the display plate 82, a character 84 "locked" indicating that the lock is in progress is displayed.
The connection fitting 83 is a fitting having an inverted U-shaped cross section. The bottom surface of the display plate 82 is fixed to the upper surface (fixed surface) of the connection fitting 83 by welding or an adhesive. However, in the lock state indicator 81 according to the present embodiment, the display plate 82 is both the connection fitting 83. 7 is different from the locked bill indicator 41 according to the third embodiment shown in FIG.

  The locked bill indicator 81 has two screws 87a and 87b screwed into two screw holes 86a and 86b provided on one side surface 85 of the connection fitting 83, respectively. Are attached to the operation lever by tightening the two screws 87a and 87b with the operation lever as described above sandwiched between the side surfaces 85 and 88).

  The locked bill indicator 81 can be used, for example, in a line switch similar to the line switch 50 shown in FIGS. 8 and 9 when the operation lever does not face the front side of the line switch when locked. .

  The lock status indicator of the present invention can be used, for example, as a locked bill display indicating that a line switch that opens and closes a power transmission path is locked in an open state.

It is a figure which shows the structure of the locked bill display device 1 by 1st Example of this invention. It is a figure which shows the state of the locked bill display apparatus 1 shown in FIG. 1 at the time of lock release. It is a figure which shows the state of the locked bill display apparatus 1 shown in FIG. 1 at the time of a lock | rock. It is a figure which shows the structure of the locked bill indicator 21 by the 2nd Example of this invention. It is a figure which shows the state of the locked bill indicator 21 shown in FIG. 4 at the time of lock release. It is a figure which shows the state of the locked bill display apparatus 21 shown in FIG. 4 at the time of a lock | rock. It is a figure which shows the structure of the locked bill indicator 41 by the 3rd Example of this invention. It is a figure which shows the state of the locked bill indicator 41 shown in FIG. 7 at the time of lock release. It is a figure which shows the state of the locked bill display apparatus 41 shown in FIG. 7 at the time of a lock | rock. It is a figure which shows the structure of the locked bill indicator 61 by the 4th Example of this invention. It is a figure which shows the state which the character display surface of the display board 62 of the locked bill indicator 61 shown in FIG. 10 hidden. It is a figure which shows the state of the locked bill display device 61 shown in FIG. 10 at the time of lock release. It is a figure which shows the state of the locked bill display apparatus 61 shown in FIG. 10 at the time of a lock | rock. It is a figure which shows the structure of the locked bill display device 81 by the 5th Example of this invention.

Explanation of symbols

1, 21, 41, 61, 81 Locked bill display device 2, 22, 42, 62, 82 Display board 3, 23, 43, 63, 83 Connection bracket 4, 24, 44, 64, 84 Characters 5, 25, 45, 65 Adhering surfaces 6a, 6b, 26a, 26b, 46a, 46b, 66a, 66b, 86a, 86b Screw holes 7a, 7b, 27a, 27b, 47a, 47b, 67a, 67b, 87a, 87b Screws 8, 28, 68, 85, 88 Side surface 10, 30, 50, 70 Line switch 11, 31, 51, 71 Main body 12, 32, 52, 72 Operation rod 13, 33, 53, 73 Operation lever 14 Hinge 54 Connecting shaft 62a Rotation limit Portion 69 Flat plate 69a Pin 74 Support member

Claims (6)

A locked bill indicator indicating that the line switch that opens and closes the transmission line is locked in the open state,
A display board having an indication of being locked;
A support portion for supporting the display plate so that the direction of the display plate changes in conjunction with an operation lever attached to the track switch so as to be rotatable between an unlock position and a lock position ;
When the operating lever is in the unlocked position is not visible display of said display panel, when the operating lever is in the locked position so that the display of the display panel is visible, the operating lever by the supporting part It is attached,
This is a lock bill indicator. The support portion includes a connection fitting (3) having an inverted U-shaped cross section,
The side surface of the display plate is fixed to the fixing surface (5) of the connection fitting so that the display of the display plate (2) faces the opening side of the connection fitting,
The operation lever (13) is configured to be rotatable in the vertical direction,
The lock in the bill display (1) is, when the operating lever is in the unlocked position faces the display plate ground side, the panel has the line off when the operating lever is in said locked position It is attached to the operation lever by the support part so as to face the front side of the container (10).
The locked bill display device according to claim 1, wherein: The support part includes a connection fitting (23) having a U-shaped cross section,
The bottom surface of the display plate is fixed to the fixing surface (25) of the connection fitting so that the display of the display plate (22) faces the opening side of the connection fitting,
The operation lever (33) is configured to be rotatable in the horizontal direction,
The lock in the bill indicator (21) is, when the operating lever is in the unlocked position is hidden and the display board on the rear side of the line switches, said display when the operating lever is in said locked position Attached to the operation lever by the support portion so that the plate appears in a state facing the front side of the line switch,
The locked bill display device according to claim 1, wherein: The support portion includes a connection fitting (43) having an inverted U-shaped cross section,
The bottom surface of the display plate is fixed to the fixing surface (45) of the connection fitting so that the display of the display plate (42) faces in a direction perpendicular to the opening of the connection fitting,
The operation lever (53) is configured to be rotatable in the horizontal direction,
The lock in the bill indicator (41) is, when the operating lever is in the unlocked position is facing the rear of the panel is the line switch, wherein the display when the operating lever is in said locked position Attached to the operation lever by the support portion so that the plate faces the front side of the line switch,
The locked bill display device according to claim 1, wherein:   5. A locked bill display device according to claim 4, characterized in that the display plate (82) is inclined with respect to both side surfaces (85, 88) of the connection fitting (83). The support portion includes a connection fitting (63) and a flat plate (69) having an inverted U-shaped cross section,
The display plate (62) is rotatably attached to the flat plate (69),
On the side surface of the display plate, a rotation limiting portion (62a) is provided perpendicular to the display of the display plate,
The flat plate is fixed to the fixing surface (65) of the connection fitting so that the display of the display plate faces a direction perpendicular to the opening of the connection fitting,
The lock in the bill indicator (61) is, when the operating lever is in the unlocked position is located on the rear side of the display panel is the flat, the display panel when the operating lever is in said locked position Is attached to the operation lever by the support portion so that appears from the back of the flat plate,
The locked bill display device according to claim 1, wherein:

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