JPS5960826A - Intermittent drive mechanism for tap changer - 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 [Technical Field of the Invention] The present invention relates to an intermittent drive mechanism used in a tap changer such as an on-load tap changer or a voltageless tag changer.

[Technical background of the invention]

Conventional on-load tap changers, non-voltage tap changers, etc. are configured to convert the rotation of a drive shaft into intermittent motion using a Geneva gear mechanism as shown in FIGS. 1 and 2, for example, to perform a tap change operation. There is. This Geneva gear mechanism consists of a Geneva driver 2 attached to a drive shaft 1 and a driven shaft 3.
It consists of a Geneva gear 4 attached to the The Geneva driver 2 is fixed to the drive shaft 1 by a pin 5, and has an arc-shaped cylindrical portion 6 and a relief portion 7 formed by cutting out a part of the cylindrical portion 6, and corresponds to the relief portion 7. A drive pin 8 is provided in a protruding manner at this position. The Geneva gear 4 is fixed to the driven shaft 3 by a pin 9, and the Geneva gear 4 has a plurality of arc-shaped fitting recesses 10 on its peripheral edge that fit into the cylindrical portion 6 of the Geneva driver 2. A plurality of drive grooves 11 that engage with drive pins 8 of 2...
・is formed.

When the Geneva driver 2 rotates together with the drive shaft 1, in a state where the cylindrical portion 6 of the Geneva driver 2 is fitted into the fitting recess 1o of the Geneva gear 4, only the Geneva driver 2 rotates idly, and the Geneva gear 4 Since it does not rotate and the fitting recesses 1o are fitted into the cylindrical portion 6, the Geneva gear 4 does not rotate even if a load is applied to the driven shaft 3 side.

Then, when the relief part 7 of the Geneva driver 2 faces the Geneva gear 4, the fitting with the fitting recess 1o is disengaged, and the Geneva gear 4 becomes rotatable, and the drive pin 8 is moved into the drive groove 1.
and rotates the Geneva gear 4 by a predetermined angle.

[Problems with background technology]

In the prior art described above, the reduction ratio of the Geneva gear mechanism cannot be made very large, so the drive shaft 1 had to be reduced in speed by another gear mechanism. That is, for example, as in another conventional example shown in FIG. 3, if the diameter of the Geneva gear 4' is increased and the number of fitting openings 1ol... and drive grooves 11'... is increased to increase the reduction ratio. The length of the four fitting portions 10' becomes shorter, and the length of the fitting with the cylindrical portion 6 of the Geneva driver 2 becomes shorter. A predetermined gap is required between the fitting recess JO'... and the cylindrical part 6, but when the fitting length becomes short in this way, the Geneva gear 4 due to this gap
’ side play increases. For this reason, when a load is applied to the driven shaft 3 side, the driven shaft 3 rotates undesirably, so the reduction ratio cannot be increased very much. Therefore, as mentioned above, it is necessary to separately provide a gear mechanism for speed reduction, resulting in a complicated structure and an increase in the size of the tap changer as a whole. Furthermore, since the maximum number of tags is limited by the number of fitting openings and drive grooves, there is also a problem in that if these numbers are small, the maximum number of taps of the tap changer is also limited. [Object of the Invention] The present invention has been made based on the above circumstances, and its purpose is to increase the reduction ratio, simplify the structure by omitting the gear mechanism for reduction, Another object of the present invention is to provide an intermittent drive mechanism for a tag changer that can be made smaller and can increase the maximum number of taps.

[Summary of the invention]

The present invention includes a drive shaft, a drive body attached to the drive shaft and having a cylindrical part, a relief part formed by cutting out a part of the cylindrical part on the axial side of the drive body, and a relief part formed by cutting out a part of the cylindrical part on the axial side of the drive body a driving pin mounted on the other axial side of the driving body; a driven shaft; and a stop-horn mother disk having a plurality of arc-shaped fitting openings provided on the driven shaft and fitting into the cylindrical portion of the driving body at the peripheral edge thereof; , a driving disk having a plurality of driving grooves attached to the driven shaft and engaging with driving pins protruding from the driving body on the peripheral edge thereof. Therefore, since the stop horn or disk having a fitting opening on the peripheral edge and the drive disk having a drive groove are separate bodies, there is no need to provide a drive groove on the stop horn mother plate, and the four fitting parts are separated by that amount. The length can be increased. Therefore, by increasing the number of fitting recesses and drive grooves, the reduction ratio can be increased. Therefore, a gear mechanism is not required for deceleration, the structure can be simplified and downsized, and the maximum number of tap points can be increased.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 4 to 6. In the figure, 101 is a drive shaft, and 102 is a driven shaft, which are supported by bearings 103, 103, 104, and 104. This drive shaft 101 has a drive body 105.
It is attached by a gun 106. This driving body 1
05 has an arc-shaped cylindrical portion 1θ7, and on one side in the axial direction, a relief portion 108 is formed by cutting out a part of this cylindrical portion 107.
is formed. Also, from the other axial side of the drive body 105, a drive pin 10 is located at a position corresponding to the relief portion 108.
9 is provided protrudingly.

Further, the driven shaft 102 is provided with a stone A as shown in FIG.
1 disk 110 and drive disk 11 are attached by pins 112. And the above-mentioned strut disc 110
A plurality of arc-shaped fitting recesses 113 are provided at the peripheral edge of the .
are formed, and these fitting recesses 113... are formed in the drive body 1.
It is configured to fit into the cylindrical portion 6-107 of 05. Note that a slight gap is formed between these fitting recesses 113 and the cylindrical portion 107, so that the driving body 105 can rotate. Further, the driving disk 111 is connected to the driving body 10.
5, and a plurality of drive grooves 114 are formed in the peripheral edge thereof.

Next, the operation of this embodiment will be explained.

When the drive shaft 101 is rotated, the drive body 105 also rotates together with the drive shaft 101. The cylindrical portion 107 of this drive body 105 is connected to the fitting recess 113 of the stopper disk 110.
..., only this drive body 105 rotates idly, and the stopper disk 110 does not rotate, so that the driven shaft 1
02 also does not rotate, and the stopper disk 110 fitting recess 11
3... is fitted into the cylindrical portion 107, so the driven shaft 10
Even if a load is applied to the second side, this driven shaft 102 does not rotate. The relief portion 10B of the driver 1θ5 is the fitting recess 1.
13..., the fitting recesses 113... are disengaged and the stopper disk 7-110 becomes rotatable. In this state, the driver 1
05 drive bin 109 is in the drive groove 114 of the drive disk 111
. . . and rotates the drive disk 11 by a predetermined angle. Thereafter, such an operation is repeated until the driven shaft 102
rotates intermittently by a predetermined angle.

〔Effect of the invention〕

As described above, the present invention includes a drive shaft, a drive body attached to the drive shaft and having a cylindrical part, and a relief part formed by cutting out a part of the cylindrical part on the axial side of the drive body. , a driving pin protruding and recessed from the other axial side surface of the driving body, a driven shaft, and a plurality of arc-shaped fitting openings provided on the driven shaft and fitting into the cylindrical portion of the driving body at the peripheral edge thereof. The drive disc includes a stopper disc, and a drive disc that is attached to the driven shaft and has a plurality of drive grooves that engage drive pins that protrude from the drive body at the peripheral edge. Therefore, since the Stotsu 9 disc having a fitting recess on the peripheral edge and the driving disc having a drive groove are separate bodies, the Stotsu 4 disc has a driving groove 8.
- The length of the fitting recess can be increased accordingly. Therefore, by increasing the number of fitting openings and drive grooves, the reduction ratio can be increased. This eliminates the need for a gear mechanism for deceleration, simplifying the structure and
Moreover, it has great effects such as being able to be made smaller and increasing the maximum number of tap points.

[Brief explanation of the drawing]

1 and 2 show a conventional example, and FIG. 1 is a plan view, and FIG. 2 is a sectional view taken along the line 1--2 in FIG. Also the third
The figure is a plan view of another conventional example. 4 to 6 show an embodiment of the present invention, FIG. 4 is a plan view, FIG. 5 is a sectional view taken along line v-v in FIG. 4, and FIG. −
It is a view taken along the Vl arrow. 101... Drive shaft, 102... Driven shaft, 105...
- Drive body, 107... Cylindrical part, 108... Relief part,
109... Drive pin, 110... Stopper disc, 1
11... Drive 81 plate, 113... Fitting recess, 114
...Drive groove. 9- Figure 1 1 Shinmu Figure 5 Figure 6 Figure 14

Claims (1)

[Claims] A drive shaft, a drive body attached to the drive shaft and having a cylindrical part, a relief part formed by cutting out a part of the cylindrical part on the side in the axial direction of the drive shaft, and a relief part of the drive body. Similarly, there is a drive pin protruding from the other side in the axial direction, a driven wheel, and a plurality of arc-shaped fitting recesses provided on the driven shaft and fitted into the cylindrical portion of the drive body at the peripheral edge thereof. board and
An intermittent drive mechanism for a tag changer, comprising: a drive disk that is attached to the driven shaft and has a plurality of drive grooves that engage drive pins that protrude from the drive body at its peripheral edge.