JPH07283045A - Tap position indicator - Google Patents

Abstract

PURPOSE:To obtain a tap position indicator for deciding whether the tap is changed in the increasing direction of the decreasing direction upon failure of a tap changing mechanism in which the cause of failure can be determined easily. CONSTITUTION:A stop position indicating plate 1 is coupled with the tap changing mechanism side through a coupling shaft 2 and a fixing metal 3 while a graduation plate 4 is coupled with the tap changing mechanism side through a coupling shaft 5. An indication plate 8 for deciding the normal stop position range of the stop position indicating plate 1 is provided with a changing direction indicating window and changing direction indicating parts 13, 14 are provided at the positions corresponding to the changing direction indicating window when the indicating plate 10 is turned by a specified angle. When the indicating plate 1 stops at a position other than a regular position, the indicating plate 10 is turned by a specified angle by means of the fixing metal 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tap position display device for displaying the tap position of a load tap switching device.

[0002]

2. Description of the Related Art FIGS. 3 and 4 show a vertical side view and a front view of a conventional tap position display device, and 1 is a stop position display plate for displaying a stop position of a tap, and a tap of a tap switching device under load. It is connected via a connecting shaft 2 on the switching mechanism side through a mounting bracket 3, and is rotated clockwise in FIG. 4 when the tap switching direction is an upward direction, and is rotated counterclockwise when it is a downward direction. In any case, one rotation (360 ° rotation) is performed for each tap change. Reference numeral 4 denotes a scale plate for displaying tap positions, and the engraved scale is equally divided into an arbitrary number N of taps from the highest tap position to the lowest tap position.
The scale plate 4 is connected to a connecting shaft 5 from the tap switching mechanism side via a mounting bracket 6.

Reference numeral 7 is a switching frequency recorder for recording the switching frequency,
Reference numeral 8 denotes an indicator plate, and the switching frequency recorder 7 counts and displays 1 time per 1 tap switching, and this display can be seen from the opening 8a of the indicator plate 8. Reference numeral 9 is an indicator line that is vertically drawn in the center of the surface of the indicator plate 8. The switching frequency recorder 7 and the indicator plate 8 are attached to a bracket 15.

In the above structure, the stop position display plate 1 makes one rotation for each tap change (right in the ascending direction and left in the descending direction).
Then, the scale plate 4 is rotated by a predetermined angle to display the tap position. Further, the switching frequency recorder 7 records and displays the tap switching frequency. Further, 1a is a normal stop position range provided on the stop position display plate 1, and the instruction line 9 is the normal stop position range portion 1
If it coincides with a, it is determined that the tap stop position is normal, and that the indicator line 9 coincides with any one of the scales on the scale plate 4.

[0005]

By the way, most of the failures of the tap switching device under load are occupied by tap congestion failures. A tap traffic jam failure means that the stop position display plate 1 is 3
The drive motor on the side of the tap switching mechanism stops when it rotates within 60 ° or more than 360 °, and the circuit breaker for protecting the drive motor also trips, indicating the incomplete tap switching state. The causes of this tap congestion failure are malfunctions of various electromagnetic contactors and cam switches that start and stop the drive motors in response to external tap up / down commands, or a fixed drive system for tap switching under load. There is astringency etc.

When the tap congestion trouble as described above occurs, the stop position display plate 1 stops with the normal stop position range portion 1a and the instruction line 9 and the scale of the scale plate 4 and the instruction line 9 deviated from each other. However, there is a problem that it is not possible to determine whether the tap switching direction at that time is the ascending direction or the descending direction, it takes time to investigate the cause of the failure, and the recovery is delayed.

The present invention has been made to solve the above problems, and can immediately determine whether the tap switching direction is the ascending direction or the descending direction when a failure occurs in the tap switching mechanism. An object is to obtain a tap position display device capable of investigating the cause of a failure.

[0008]

A tap position display device according to the present invention includes a switching direction display plate having a switching direction display portion in a portion corresponding to a switching direction display window at a position rotated by a predetermined angle, and a stop position display. The cam member is provided integrally with the plate and engages with the switching direction display plate to rotate the switching direction display plate by a predetermined angle when the stop position display plate stops outside the normal stop position range.

[0009]

According to the present invention, when a tap traffic jam or the like occurs, the stop position display plate stops outside the normal stop position range, and the cam member integrally provided with the stop position display plate is the switching direction display plate. Is rotated by a predetermined angle, and a switching direction display portion of the switching direction display plate is displayed in the switching direction display window.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 (a) and 1 (b) show a vertical sectional side view and a front view of a tap position display device according to this embodiment, and FIG. 2 shows an enlarged front view of its main part. In the figure, 11 is a bracket 1
5, a fan-shaped switching direction display plate 10 is rotatably supported on the rotating shaft 11. A roller 12 is rotatably supported on the back side of the upper end of the switching direction display plate 10, and the lower end of the switching direction display plate 10 is formed in an arc shape centering on the rotating shaft 11, and the surface of the lower end portion of the switching direction display plate 10 is formed. A rising character 14 and a descending character 13 are engraved on both ends. Further, the mounting member 3 that rotates integrally with the stop position display plate 1 engages with the roller 12 and has the recess 3a, and serves as a cam member. In addition, the indicator board 8
Has a switching direction display window 8b formed above the opening 8a,
The switching direction display window 8b is at the same position as the lower end of the switching direction display plate 10.

In the above machine configuration, FIG. 1 is in the state of the normal specified position, the instruction line 9 and the normal stop position range portion 1a coincide, and the instruction line 9 and the scale of the scale plate 4 also coincide. In this state, the roller 12 is engaged with the concave portion 3a of the mounting member 3, the switching direction display plate 10 is in a symmetrical position, and the switching direction display window 8b is in a non-display state. When a switching command is issued in the tap raising direction in this state, the drive motor rotates, the stop shaft indicating plate 1 rotates rightward together with the connecting shaft 2 and the mounting bracket 3, and one end of the concave portion 3a rotates as shown in FIG. By pressing 12, the switching direction display plate 10 is rotated leftward about the rotation shaft 11, and the upward direction character 14 of the switching direction display plate 10 is displayed in the switching direction display window 8b of the indicator plate 8. This state is maintained by the engagement of the roller 12 with the circumferential portion of the mounting member 3.

When this rotation further progresses and when the one-tap switching is completed, the mass of the switching direction display plate 10 below the rotating shaft 11 overlaps with the mass of the upper side including the roller 12, and again the recess 3a as shown in FIG. The roller 12 is engaged with, and the switching direction display window 8b is in the non-display state again, and the switching is completed.
Here, when tap congestion occurs during the switching and rotation stops, for example, the rising character 14 remains displayed in the switching direction display window 8b. On the other hand, when the switching command is issued in the tap descending direction, the stop position display plate 1 rotates counterclockwise, and the subsequent operation is the same as the ascending operation.

In the above embodiment, when the stop position display plate stops outside the normal stop position range due to a tap jam trouble or the like, the switching direction display plate is rotated by the mounting bracket 3 by a predetermined angle. In this case, the rising character 14 or the descending character 13 is displayed in the switching direction display window 8b of the pointing plate 8, and it is possible to immediately determine whether the tap switching direction is the ascending direction or the descending direction. Also, the position of the stop position display plate 1,
The position of the scale plate 4, the position from the start of recording, the tap position, and the number of times of recording can be known from the recording of the switching number recorder 7, and these data are collated with the timing chart of electromagnetic contactors and cam switches. By doing so, the cause of the failure can be easily found, and the recovery can be made early.

In the above embodiment, the mounting bracket 3
The engagement between the concave portion 3a of the roller and the roller 12 is performed by the switching direction display plate 10.
However, it may be performed by the force of the spring.

[0015]

As described above, according to the present invention, when the tap congestion failure or the like occurs and the stop position display plate stops at a position other than the normal position, the switching direction display plate is rotated by a predetermined angle by the cam member. , Switching direction The rising / falling tap switching direction is displayed on the Japanese window, so that the cause of failure can be investigated at an early stage and restoration work can be performed at an early stage.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view and a front view of a tap position display device according to the present invention.

FIG. 2 is an enlarged front view of the essential parts of the tap position display device according to the present invention.

FIG. 3 is a vertical sectional side view of a conventional tap position display device.

FIG. 4 is a front view of a conventional tap position display device.

[Explanation of symbols]

 1 ... Stop position display plate 1a ... Regular stop position range part 2,5 ... Connecting shaft 3 ... Mounting metal fitting (cam member) 3a ... Concave part 4 ... Scale plate 7 ... Switching frequency recorder 8 ... Indicator plate 8b ... Switching direction display window 9 ... Indication line 10 ... Switching direction display plate 11 ... Rotating shaft 12 ... Roller 13 ... Descending character 14 ... Ascending character

Claims (1)

[Claims] 1. A stop position display plate that is connected to the tap switching mechanism side and rotates once for each tap switching, and is connected to a stop position display plate that rotates in different directions depending on whether the tap is moving up or down. A scale plate that rotates a predetermined angle to display the tap position, a switch count recorder that counts and displays the number of tap changes, a normal stop position range of the stop position display plate, and a switching direction display window Provided integrally with the indicator plate, a switching direction indicator plate which is rotatably supported and has a switching direction indicator portion at a position corresponding to the switching direction indicator window at a position rotated by a predetermined angle, and a stop position indicator plate. A tap position characterized by including a cam member that engages with the switching direction display plate and rotates the switching direction display plate by a predetermined angle when the stop position display plate stops outside the normal stop position range. Display device.