JPS6247332B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a power storage mechanism for a switching switch, and more particularly to a power storage mechanism for a switching switch of a load tap switching device in a transformer.

In switching switches generally used in on-load tap switching transformers, if the switching switch stalls during switching operation, there is a high possibility that a serious accident will occur with the transformer.

Therefore, it is necessary to use a switching switch equipped with a highly reliable energy storage mechanism. However, all of the conventional energy storage mechanisms have had the disadvantage that in order to perform their operations rationally, the structures have to be complicated, and conversely, if the mechanisms are simplified, their operations become irrational.

The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a power storage mechanism for a switching switch that can be miniaturized using a rational power storage method and that operates smoothly and reliably. Hereinafter, one embodiment of the present invention will be described in detail using the drawings.

FIGS. 1 and 2 are a front view and a plan view of a power storage mechanism for a switching switch according to the present invention. This is to instantaneously release the operating force to instantly operate the switch in the load tap switching device of the transformer, and the torque (operating force) intermittently applied from the operating mechanism (not shown) is transferred to the spring. It is comprised of a pair of sliding blocks 1, 2, etc., which are movable within a predetermined range so as to store energy and switch a switch (not shown) by instantaneously discharging energy. That is, as shown in FIG. 3, two mutually parallel guide shafts 5, 5 supported at both ends by bearings 3, 3 and attached to the base plate 4 are provided with the pair of sliding blocks 1, 2, as shown in FIG. are slidably guided, and the pair of sliding blocks 1 and 2 are connected to each other by two tension springs 6 and 6 disposed on both sides of each.
Between the pair of sliding blocks 1 and 2,
A rotatably mounted roller 8 is interposed at the tip of the drive lever 7, and the drive lever 7 is arranged with its base between the two guide shafts 5 and at the center of each in the longitudinal direction. The input shaft 9 is fixed to the end thereof by a key 10 or the like. The input shaft 9 is rotated by 1/2 rotation in any direction by the operating mechanism driven by the switching command, that is, the input shaft 9 is rotated by 1/2 rotation in any direction for each switching command. It is something to do.

Between the pair of sliding blocks 1 and 2 and the substrate 4, sliding blocks 1 and 2 are provided.
A driven lever 12 is provided with a roller 11 interposed between the two and rotatably attached to the tip thereof. It is fixed. The output shaft 13 has a pair of sliding blocks 1,
It is rotated to switch a switch (not shown) as the guide shaft 2 reciprocates, and is disposed at an appropriate distance from the input shaft 9 at the center of the guide shaft 5 in the longitudinal direction. The output shaft 13 also includes locking portions 14a and 14 that are appropriately spaced apart from each other on the outer circumference.
A substantially disc-shaped cam stopper 14 having a shape of
4a, 14a, by means of pivots 15, 15 implanted in the substrate 4 symmetrically with respect to the input/output shafts 9, 13,
One end of a pair of bell-crank-shaped stoppers 16, 16, which are rotatably supported at the center of each stopper, is detachably provided. That is, pins 17, 17 are implanted at the other end of each stopper 16, 16, and are implanted on the board 4 symmetrically with respect to the input/output shafts 9, 13, similar to each pin 17 and each pivot shaft 15. One end of each stopper 16 is connected to the locking portion 14 of the cam stopper 14 between the provided pins 18, 18.
Tension springs 19, 19 are each tensioned to bias the rotation in the direction of engagement with the a. Further, at the other end of each stopper 16, there are detachment pins 20, 20 implanted in each of the sliding blocks 1, 2 in order to disengage the engagement between the respective one end and the locking portion 14a of the cam stopper 14. It is provided so that it can be brought into contact freely.

The operation of this energy storage mechanism will be explained based on the above configuration. First, in FIG. 2, when the input shaft 9 is now rotated clockwise from the state of the stop position shown in this figure by the driving force of the operating mechanism due to the switching command,
The sliding block 1 is guided by guide shafts 5, 5 while being pressed by a roller 8 attached to the tip of a drive lever 7 that rotates together with an input shaft 9, and moves to the left in FIG. At this time, the sliding block 2 is connected to one sliding block 1 by the tension springs 6, 6 for accumulating energy.
Because it is connected to the sliding block 1, it tries to move in the same direction as the sliding block 1, but one stopper 16 is moved by the action of the tension spring 19.
It is rotated counterclockwise about the pivot shaft 15, and one end thereof is connected to the locking portion 14 of the cam stopper 14.
a, the movement of the other sliding block 2 is controlled by the driven lever 12 which is integrally attached to the output shaft 3 with the cam stopper 14.
It is regulated by a roller 11 provided at the tip of the roller.

Therefore, the pair of sliding blocks 1,
The operating force is stored in the tension springs 6, 6 connecting the two.

In addition, in the stopped state shown in FIG. 2, the other end of the other stopper 16 is in contact with the detachment pin 20 installed in the sliding block 2, so that the rotation bias by the tension spring 19 is restricted. At the same time, one end of the cam stopper 14 is released.

As the input shaft 9 continues to rotate clockwise from this state, when the sliding block 1 reaches a predetermined position, the stopper 16 is released from the tension spring by the release pin 20 implanted in the sliding block 1. 19 and rotated clockwise around the pivot 15, one end of one stopper 16 and the locking portion 14 of the cam stopper 14.
The engagement with a is released. Therefore, the other sliding block 2 is moved toward the one sliding block 1 while being guided by the guide shafts 5, 5 by the instantaneous release of the tension springs 6, 6, and at the same time, the sliding block 2 is moved toward the one sliding block 1. The roller 11 at the tip of the lever 12 is connected to the sliding block 2 at the other end.
is rotated clockwise by being pressed by
The output shaft 13 to which this driven lever 12 is attached is also rotated by a predetermined angle in the same direction.
Switching of the switch is instantaneous.

When the switching of the switch is completed, the other stopper 16 is rotated clockwise about the pivot shaft 15 by the action of the tension spring 19, and one end thereof is engaged with the locking portion 14a of the cam stopper 14.

As described above, the other stopper 16 and
While restricting the movement of one sliding block 1 by engagement with the cam stopper 14, the input shaft 9 rotates in any direction by driving the operating mechanism in response to a switching command, and the other sliding block 2 is rotated in a manner different from that described above. Moving in the opposite direction, the tension spring 6,
6 and when it reaches the predetermined position,
By releasing the movement restriction of one sliding block 1 by the other stopper 16 and releasing the tension springs 6, 6, the output shaft 13 is released.
The switch is switched by rotating the switch counterclockwise, and this operation is repeated in the same manner.

As described above, the present invention has two guide shafts supported at both ends by bearings on a substrate, and one connected to the guide shafts by a tension spring for accumulating energy.
A drive lever is provided with a pair of sliding blocks slidably attached thereto, an input shaft that rotates intermittently is disposed between the guide shaft, and the input shaft is provided with a roller interposed between the sliding blocks. An output shaft is rotatably passed through the substrate, and a driven lever having a roller interposed between the sliding blocks is mounted on the output shaft, and two engaging levers are attached to the output shaft. A cam stopper having a stop portion is installed, and one end of a pair of bell crank-shaped stoppers pivotally supported on the base plate is provided at the locking portion of the cam stopper so as to be able to engage and disengage alternately in conjunction with the movement of the sliding block. As a result, it is possible to rationally downsize the energy storage mechanism for the switching switch and to make its operation smooth and reliable.

[Brief explanation of the drawing]

1 and 2 are a front view and a plan view, respectively, of the energy storage mechanism according to the present invention, and FIG. 3 is a sectional view taken along the line - in FIG. 1. 1, 2...Sliding block, 3...Bearing,
4... Board, 5... Guide shaft, 6... Tension spring for energy storage, 7... Drive lever, 8... Roller, 9... Input shaft, 11... Roller, 12... Driven lever, 13... Output shaft, 14... Cam stopper, 14a ...locking part,
16...stopper.

Claims (1)

[Claims] 1. Both ends of two guide shafts are supported by bearings on a substrate, and a pair of sliding blocks connected to the guide shafts by a tension spring for storage are slidably mounted, and a gap between the guide shafts is provided. An input shaft that rotates intermittently is disposed on the input shaft, and a drive lever having a roller interposed between the sliding blocks is attached to the input shaft, and the output shaft is rotatably passed through the substrate. At the same time, a driven lever with a roller interposed between the sliding blocks is attached to the output shaft, and a cam stopper having two locking portions is installed on the output shaft, and the locking portion of the cam stopper is fitted with a driven lever having a roller interposed between the sliding blocks. A power storage mechanism for a switching switch, characterized in that one end of a pair of bell crank-shaped stoppers pivotally supported on the base plate is provided so as to be able to be engaged and disengaged alternately in conjunction with the movement of the sliding block.