JPH11144574A - Switch operating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a motor operation from being hindered even in the malfunction of an auxiliary relay and provide excellent operation reliability by connecting a self-auxiliary switch contact in series to an auxiliary relay contact within a motor operating circuit. SOLUTION: In the middle of ON-operation of a motor operating circuit, ON-side motor operating auxiliary relay contacts 24, 25 and self-auxiliary switch contacts 33 (B11), 33 (B12) are closed, and OFF-side motor operating auxiliary relay contacts 30, 30 and self-auxiliary switch contacts 33, 34 are opened. Even if the auxiliary relay contacts 30, 30 are erroneously made by the excessive operating vibration of a drive spring, the self-auxiliary switch contacts 33 (A11), 33 (A12) is kept open. Thus, since the self-auxiliary switch contacts 33, 34 are opened even if the auxiliary relay contacts 24, 24, 30, 30 are made, formation of a short-circuiting circuit without through a motor 25 can be prevented, and the ON-operation can be continued.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch operating device for operating a switch by utilizing the release of a driving spring stored by the rotational force of a motor, and more particularly to an improvement in a motor operating circuit. The present invention relates to an additional switch operating device.

[0002]

2. Description of the Related Art In recent years, the demand for power and the concentration of power consumption in cities have tended to increase, and accordingly, many switchyards indispensable for power supply have been constructed in urban areas. In order to construct such a switchgear for urban areas, it is necessary not only to increase the capacity but also to raise safety and reliability to a higher level. Therefore, a switch used in a switchyard is also required to have a large capacity and to improve reliability.

As a switch operating device for operating such a switch at high speed, an electric spring operating device is often employed. The electric spring operating device is usually provided with a motor, a driving spring, and a motor operating circuit. The motor is rotated by the control of the motor operating circuit, and the rotational force accumulates the driving spring. The main shaft of the switch is rotated by the force of the spring to operate the switch.

According to the above-described electric spring operating device, unlike the pneumatic operating mechanism and the hydraulic operating mechanism, no fluid pressure is used, so that auxiliary equipment such as a compressor and an accumulator and a pressure seal portion are unnecessary. Therefore, it is easy to simplify the structure, and excellent reliability can be secured. In addition, as the operation method of the switch, a three-phase one-piece operation method in which a switch body which is a three-phase device is operated by one operation device, and a three-phase switch body is operated by three operation devices. It is roughly classified into two types of each phase operation method.

[Specific Configuration of Electric Spring Operating Device] Here, an example of a conventionally used electric spring operating device will be specifically described with reference to an exploded perspective view of FIG. In FIG. 7, reference numerals 1 and 2 denote a pair of operation devices and reference numeral 3 denotes a motor. A worm gear 4, a worm wheel 5, and a sprocket 6 are connected to the motor 3, and a cam shaft 9 is connected to the sprocket 6 via a chain 7 and a sprocket 8. That is, the driving force from the motor 3 is transmitted to the camshaft 9.

An eccentric cam 10 is fixed to a part of the cam shaft 9, and a closing spring accumulating lever 12 that rotates about a shaft 11 is provided near the eccentric cam 10. The closing spring accumulating lever 12 is in contact with the eccentric cam 10 at one end thereof, and is driven by the rotation of the eccentric cam 10. One end of a closing spring 13 which is a driving spring is connected to the other end of the closing spring accumulating lever 12, and the other end of the closing spring 13 is fixed to the frame 1.

On another part of the cam shaft 9, a closing cam 14 is fixed.
5 are provided. The connecting lever 15 is in contact with the input cam 14 at one end thereof, and is driven by the rotation of the input cam 14. In this case, connecting lever 1
Reference numeral 5 is fixed to a part of the output shaft 16 so as to rotate integrally with the output shaft 16. Further, an output lever 17 is fixed to another part of the output shaft 16, and an electrode of a switch (not shown) is connected to a tip of the output lever 17. The connecting lever 15 is connected to a connecting rod 18.
Is connected to the cut-off spring accumulating lever 19 through the lever. One end of a cut-off spring accumulating lever 19 is connected to one end of a cut-off spring 20 as a drive spring, and the other end of the cut-off spring 20 is fixed to the frame 1.

[Making Operation of Electric Spring Operating Device] In the electric spring operating device of FIG. 7 configured as described above, in order to perform the making operation, the making spring 13 must first be charged. That is, the rotational force of the motor 3 is reduced by the worm gear 4 and the worm wheel 5, and further reduced from the sprocket 6 through the chain 7 and the sprocket 8.

Then, the camshaft 9 and the eccentric cam 10 are rotated by the torque transmitted to the sprocket 8 in this manner, and the closing spring accumulating lever 1 is rotated around the shaft 11.
7 is pushed to the left in FIG. 7 to rotate the closing spring energy-storing lever 12 to the energy-storing side. As a result, the closing spring 13 connected to the other end of the closing spring accumulating lever 12 is compressed, and the closing spring 13 is charged. This charged state is maintained by a catch mechanism (not shown).

When the closing command is issued in the above-mentioned charged state of the closing spring 13, a catch mechanism (not shown) releases the holding of the closing spring 13, and the closing spring 13 is released. As a result, the closing spring accumulating lever 12 rotates to the releasing side to rotate the eccentric cam 10, and at the same time, the cam shaft 9 and the closing cam 14 rotate. Further, the rotation of the input cam 14 causes the connecting lever 15 to rotate about the output shaft 16, and at the same time, the output lever 17 to rotate to the input side, and an electrode of a switch (not shown) connected to the tip of the output lever 17. Is driven to enter the closed state.

[Interrupting Operation of Electric Spring Operating Device] On the other hand, in order for the electric spring operating device of FIG. That is, in the above-described closing operation of the electric spring operating device, when the connecting lever 15 rotates about the output shaft 16 due to the rotation of the closing cam 14, the connecting rod 18 connected to the connecting lever 15 is turned on by the cut-off spring accumulating lever 19. Is rotated to the energy accumulating side to accumulate the energy of the interruption spring 20 connected to one end of the interruption spring energy accumulating lever 19. The stored state of the cut-off spring 20 is determined by the closing spring 1
As in the case of No. 3, it is held by a catch mechanism (not shown).

When a cutoff command is issued in the above-described state in which the cutoff spring 20 is charged, a catch mechanism (not shown) releases the holding of the cutoff spring 20 and the cutoff spring 2
0 fires. As a result, the cut-off spring accumulating lever 20 rotates to the release side, and this rotation causes the connecting lever 15 to rotate about the output shaft 16 via the connecting rod 18,
At the same time, the output lever 17 rotates to the cutoff side, and drives the electrode of a switch (not shown) connected to the tip of the output lever 17 to be in the cutoff state.

[Configuration of Motor Operation Circuit] As described above, the switch operating device is provided with the motor operation circuit for operating the motor. Hereinafter, a general circuit configuration of the motor operation circuit will be described with reference to FIG. FIG. 8 is a circuit diagram of a motor operating circuit in an electric spring operating device adopting a three-phase one-operation system in which a switch body as a phaser is operated by one operating device.

The motor operation circuit shown in FIG. 8 includes a power supply side circuit (left side in the figure) and a motor side circuit (right side in the figure). The power supply side circuit includes a positive power supply terminal 21 to which an ON operation voltage is applied, and a positive power supply terminal 27 to which a OFF operation voltage whose polarity is opposite to the ON operation voltage is applied. That is, since the on-operation voltage and the off-operation voltage are opposite in polarity, the rotation direction of a motor (described later) operated by this operation voltage is reversed between the on-operation and the off-operation.

An auxiliary auxiliary relay 22 and an auxiliary auxiliary relay 28 are connected to the positive power supply terminals 2 and 27, respectively. A self-holding contact 23 and an auxiliary switch contact (B contact) 26 are connected to the input auxiliary relay 22, and a self-holding contact 29 and an auxiliary switch (A contact) 31 are connected to the switching auxiliary relay 28. It is connected.

On the other hand, a motor 25 is provided in the motor side circuit, and two auxiliary relay contacts 24, 24 and 30, 30 for operating two types of motors are connected to the motor 25, for a total of four auxiliary relay contacts. Have been. Of these, the auxiliary relay contacts 24, 24 are relay contacts for operation of the input side motor that is made by excitation of the auxiliary auxiliary relay 22, and the auxiliary relay contacts 30, 30 are the disconnection side that is made by excitation of the auxiliary auxiliary relay 28. Relay contact for motor operation.

[On operation of motor operation circuit] When the above-described motor operation circuit performs the on operation, the following operation is performed. First, when the positive power supply terminal 21 applies an on-operation voltage in response to an on-operation command, the input auxiliary relay 22 applies an operation voltage to both ends of the coil to excite the coil. When the input auxiliary relay 22 excites the coil, the self-holding contact 23 and the auxiliary relay contacts 24, 24 (for operating the input side motor) are simultaneously made. As a result, the motor side circuit is closed, and the motor 25 starts rotating.

The drive spring is stored by the rotational force of the motor 25, and the release of the drive spring causes the main shaft of the switch to rotate in the closing direction, whereby the switch body can be operated at a high speed in the closing direction. When the switch body performs the closing operation, the auxiliary switch contact (B contact) 26 breaks, the excitation of the input auxiliary relay 22 is released, and the auxiliary relay contacts 24, 24 break. As a result, the motor 25 stops, and a series of on-operations is completed.

[Turn-off operation of motor operation circuit] On the other hand, when the turn-off operation is performed by the motor operation circuit, the turn-off command is applied to the positive power supply terminal 27 by the turn-off command. An operating voltage is applied to both ends to excite the coil. When the switching auxiliary relay 28 excites the coil, at the same time, the self-holding contact 29 and the auxiliary relay contacts 30, 30 (for operating the cut-side motor) are made. As a result, the motor side circuit is closed, and the motor 25 starts rotating. However, since the voltage applied to the motor 25 is reversed in the positive and negative directions during the on operation, the rotation direction of the motor 25 is also reversed in the same manner.

The drive spring is stored by the rotational force of the motor 25, and the release of the drive spring causes the main shaft of the switch to rotate in the closing direction, so that the switch body can be operated at a high speed in the closing direction. When the switch body performs a breaking operation, the auxiliary switch (A contact) 31 breaks, the excitation of the auxiliary relay 28 for disconnection is released, and the auxiliary relay contacts 30, 30 break. As a result, the motor 5 stops, and a series of turning operation operations is completed.

[0021]

However, the above-mentioned motor operation circuit has the following problems. That is, the auxiliary relay contacts 24 and 30 in the motor operation circuit are generally installed inside the operation device. Therefore, it is affected by the operation vibration generated at the moment when the drive spring is released during the on / off operation. Therefore,
If the operation vibration is excessive, the operation vibration is transmitted to the auxiliary relay contacts 24, 24, 30, and 30, and the auxiliary relay contact 2
4, 24, 30, 30 could malfunction.

For example, during the on-operation of the motor operation circuit, that is, when the auxiliary relay contacts 24 and 24 are being made by exciting the input auxiliary relay 22, the auxiliary relay contact 30 due to excessive operation vibration of the drive spring. , 30 make up. In this case, the motor side circuit is short-circuited without passing through the motor 25, and a short-circuit current flows through all the auxiliary relay contacts 24, 24, 30, 30 of the motor operation circuit. And four relay contacts 24, 24, 3
If 0 and 30 are melted and fixed by the short-circuit current, the motor operation circuit becomes inoperable.

The result is the same even if the auxiliary relay contacts 24, 24 are made erroneous during the turning-off operation of the motor operation circuit in which the auxiliary relay contacts 30, 30 are made. That is, four auxiliary relay contacts 24, 2
If the motors 4, 30, and 30 are made at the same time, a short circuit state of the motor side circuit may occur, which may cause the motor operation circuit to become inoperable.

Also, as shown in FIG. 8, instead of providing two types of auxiliary relay contacts, an input side and a disconnection side, in a single motor operation circuit, one type is provided for each of two independent motor operation circuits. The auxiliary relay contact for operating the motor is provided, that is, the auxiliary relay contact for operating the motor on the input side is provided in one motor operation circuit, and the auxiliary relay contact for operating the motor on the off side is provided in the other motor operation circuit. Even when a motor operation circuit is employed, a malfunction of the auxiliary relay contact leads to a malfunction of the motor, so that a malfunction still occurs.

As described above, in the conventional switch operating device, the auxiliary relay contact in the motor operating circuit malfunctions due to excessive operating vibration of the drive spring, etc.
There is a problem that the operation of the motor may be hindered.

The present invention has been proposed in order to solve the above problems, and an object of the present invention is to prevent the operation of the motor even if the auxiliary relay contact in the motor operation circuit malfunctions. It is an object of the present invention to provide a switchgear operating device that can exhibit excellent operation reliability by preventing the above.

[0027]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to an operating device used for a switch operated by rotation of a main shaft, comprising: a motor; And a motor operating circuit having an auxiliary relay contact for motor operation electrically connected to the motor, and discharges the drive spring stored by the rotational force of the motor. In the switch operating device configured to rotate the main shaft to operate the switch, the auxiliary switch contact of the switch is connected in series to the auxiliary relay contact in the motor operation circuit. I do.

In the present invention having the above configuration, even if the auxiliary relay contact in the motor operation circuit malfunctions due to excessive operation vibration or the like, its own auxiliary switch contact is connected in series with the auxiliary relay contact. The auxiliary switch contact allows the motor operating circuit to maintain the same state as the normal operation of the auxiliary relay contact. Therefore, the motor operation circuit can continue normal operation, and does not hinder the motor operation.

[0029]

Embodiments of the present invention will be specifically described below with reference to the drawings. The same members as those of the conventional type shown in FIG. 8 are denoted by the same reference numerals, and description thereof will be omitted.

(1) First Embodiment [Structure] The first embodiment is an electric spring operating device adopting a three-phase one-piece operation system as in the conventional example shown in FIG. It has a motor operation circuit configured to reverse the rotation direction of the motor 25 when the circuit is open. A feature of the configuration of the first embodiment is that, as shown in FIG. 1, four auxiliary switch contacts are additionally arranged in the motor operation circuit. More specifically, self-auxiliary switch contacts 32 and 35 are connected in series with the auxiliary relay contacts 24 and 24 (for operation of the input side motor), and are connected to the auxiliary relay contacts 30 and 30 (for operation of the off-side motor). Self-assisting switch contacts 33 and 34 are connected in series.

[Normal Operation of Motor Operating Circuit] The motor operating circuit of the first embodiment having such a circuit configuration operates as follows. First, during normal on-operation,
It operates in the same way as the conventional example shown in FIG. That is,
When the positive power supply terminal 21 applies the ON operation voltage and the coil of the auxiliary auxiliary relay 22 is excited, the self-holding contact 23 and the auxiliary relay contacts 24 and 24 (for operating the input side motor) are made. FIG. 2 shows the operation timing of the main contact and the self-assist switch contact 32 and 35 of the motor operation circuit at this time. That is, when the auxiliary relay contacts 24, 24 make, the self-assist switch contacts 32, 35 connected to the auxiliary relay contacts 24, 24 are closed. As a result, the motor side circuit of the motor operation circuit is closed, and the motor 25 is closed.
Starts spinning.

Then, the drive spring is stored by the rotational force of the motor 25, and the release of the drive spring causes the main shaft of the switch to rotate in the closing direction, whereby the switch body can be operated at a high speed in the closing direction. When the switch body performs the closing operation, the auxiliary switch contact (B contact) 26 breaks and the input auxiliary relay 2
2 is released, and the auxiliary relay contacts 24, 24 break. As a result, the motor 25 stops, and a series of on-operations is completed.

On the other hand, when the motor operation circuit performs the turning operation, the operation is the same as in the conventional example shown in FIG. That is, when the positive power supply terminal 27 applies a disconnection operation voltage and the coil of the auxiliary disconnection relay 28 is excited, the self-holding contact 2
9 and the auxiliary relay contacts 30, 30 (for operating the off-side motor) are made. When the auxiliary relay contacts 30, 30 make up, the self-auxiliary switch contacts 33, 34 connected to the auxiliary relay contacts 30, 30 are closed. As a result, the motor-side circuit is closed, and the motor 25 rotates in the reverse direction.

The drive spring is stored by the rotational force of the motor 25, and the main shaft of the switch is rotated in the blocking direction by the release of the drive spring, whereby the switch body can be operated at a high speed in the blocking direction. When the switch body performs a breaking operation, the auxiliary switch (A contact) 31 breaks, the excitation of the auxiliary relay 28 for disconnection is released, and the auxiliary relay contacts 30, 30 break. As a result, the motor 5 stops, and a series of turning operation operations is completed.

[Operation at the Time of Occurrence of Malfunction of Auxiliary Relay Contact in Motor Operation Circuit] Subsequently, the auxiliary relay contact caused by operation vibration of the drive spring during the on / off operation, which has been a problem in the conventional motor operation circuit, will be described. The operation of the motor operation circuit in the case where the device malfunctions will be described. First,
When the auxiliary relay contact malfunctions during the ON operation, the motor operation circuit operates as follows.

As described above, during the on-operation of the motor operation circuit, the auxiliary relay contacts 24 and 2 for the operation of the input side motor are operated.
4 and the self-auxiliary switch contacts 32, 35 are closed. At this time, the auxiliary relay contact 3
0, 30 and the self-assist switch switch contacts 33, 34 are open (see the operation timing in FIG. 2).

Therefore, even when the auxiliary relay contacts 30, 30 are erroneously made due to excessive operation vibration of the drive spring, the self-assist switch contacts 33, 34 continue to be opened. That is, in the motor-side circuit of the motor operation circuit, the four auxiliary relay contacts 24, 24, 30, 3
Even if 0 is made, since the self-assisting switch contacts 33 and 34 are open, the formation of a short circuit that does not involve the motor 25 can be prevented, and the ON operation can be continued.

On the other hand, when the auxiliary relay contact malfunctions during the turning operation, the motor operation circuit operates as follows. That is, while the motor operation circuit is being turned off, the auxiliary relay contacts 30 and 30 and the self-auxiliary switch contacts 33 and 34 for operating the off-side motor are closed. At this time, the auxiliary relay contacts 24, 24 and the self auxiliary switch contacts 32, 35 for the input side motor operation are open. Therefore, the auxiliary relay contacts 24, 2 are caused by excessive operation vibration of the drive spring or the like.
Even if 4 makes a mistake, the self-assisting switch contacts 32 and 35 continue to open. That is, the four auxiliary relay contacts 24, 24, 3
Even if 0 and 30 are made, the self-assist switch contact 32,
Since 35 is open, the disconnection operation can be continued without forming a short circuit that does not involve the motor 25.

According to the first embodiment as described above, the auxiliary relay contacts 24, 24, 30, 30 installed in the electric spring operating device are not operated due to excessive operation vibration of the drive spring or the like. In case of malfunction, auxiliary relay contact 2
Due to the action of the self-assisting switch contacts 32, 33, 34, 35 connected in series to 4, 24, 30, 30, a short circuit that does not pass through the motor 25 cannot be formed, and the motor operation circuit continues normal operation. can do. Therefore,
The operation of the motor 25 is not hindered, and excellent operation reliability can be exhibited.

(2) Second Embodiment [Structure] In a second embodiment, a switch operation using each phase operation system in which a switching operation unit for three phases of a switch main body is operated by three operating devices. As shown in FIG. 3, three motor operation circuits a, b, and c having the same configuration as that of the first embodiment are connected to each other by using the positive power supply terminals 21 and 27 in common as shown in FIG. It is a motor operation circuit. Note that, for each component of the motor operation circuit, a is added to the reference numeral used in the first embodiment, a is assigned to the motor operation circuit a, b is assigned to the motor operation circuit b, and c is assigned to the motor operation circuit c. Is shown.

That is, in the second embodiment, the auxiliary relay contacts 24a, 24a, 24b, 2
4b, 24c, 24c, a self-assist switch contact 32
a, 35a, 32b, 35b, 32c, 35c are connected in series, and auxiliary relay contacts 30a,
Self-assisting switch contacts 33a, 34a, 33b, 34b, 33 for 30a, 30b, 30b, 30c, 30c.
c and 34c are connected in series.

[Effects] In the second embodiment employing the above-described respective phase operation methods, three operating devices can be operated simultaneously by one motor operating circuit. Not only the operation vibration of the operation device described above, but also the operation vibrations of two operation devices other than the operation device itself may cause a malfunction of the auxiliary relay contact.

However, according to the second embodiment, the auxiliary relay contacts 24a to 24c, 30a in the electric spring operating device are provided.
To 30c malfunction, the self-assist switch contact 32a
~ 32c, 33a ~ 33c, 34a ~ 34c, 35a ~
By the function of 35c, a short circuit that does not go through the motors 25a to 25c cannot be formed, and the motor operation circuit can continue normal operation. Therefore, similarly to the first embodiment, the operation of the motors 25a to 25c is not hindered, and excellent operation reliability can be exhibited.

(3) Third Embodiment [Configuration] In the third embodiment, instead of the self-assisting switch contacts 32 and 35 in the first embodiment, limit switches 40 and 43 for checking the required operation. And the limit switches 41 and 42 for confirming the turning operation are provided in place of the self-assisting switch contacts 33 and 34 (see FIG. 4).

These limit switches 40, 41, 4
2 and 43 are configured to take the operation timing shown in FIG. 5 during the on-operation. That is, when the auxiliary relay contacts 24, 24 make up, the auxiliary relay contacts 24, 2
The limit switches 40, 43 connected to 4 are closed, and the self-assisted switch contacts 41, 42 connected to the auxiliary relay contacts 30, 30 are opened. On the other hand, when the auxiliary relay contacts 30, 30 are turned off, the limit switches 41, 42 connected to the auxiliary relay contacts 30, 30 are closed, and the auxiliary relay contacts 24,
The self-assisting switch contacts 40 and 43 connected to 24 are open.

[Operation and Effect] The third embodiment having such a configuration is described below.
In this embodiment, as in the case of the first embodiment, the limit switches 40, 41, 42, and 43 can prevent the motor operation circuit from being short-circuited due to malfunction of the auxiliary relay contacts 24, 24, 30, and 30. Therefore, normal operation of the motor operation circuit can be continued, and operation reliability is improved without hindering operation of the motor 25. Moreover, since the electric spring operating device is generally provided with the limit switch for operation confirmation, the third embodiment can be realized at low cost.

(4) Fourth Embodiment [Configuration] In the fourth embodiment, the self-assisting switch contacts 32a to 32c and 35a to 35c of the second embodiment are used as shown in FIG. Limit switches 40a ~
40c, 43a to 43c, and limit switches 41a to 41c, 42a to 42c for turning off, instead of the self auxiliary switch contacts 33a to 33c, 34a to 34c.

[Function and Effect] The fourth embodiment having the above-described structure is provided.
In the embodiment, the same operation as the above-described first to third embodiments,
Even if the auxiliary relay contacts 24a to 24c, 30a to 30c malfunction, the limit switches 40a to 40c, 41a to
41c, 42a to 42c and 43a to 43c can prevent the motor side circuit from being short-circuited, and
The operation of 5c is not hindered, and the operation reliability is improved.

[0049]

As described above, according to the present invention, in the operation circuit of the switch operating device having the auxiliary relay contact, the auxiliary relay malfunctioned due to excessive operation vibration caused by the release of the drive spring. Even in such a case, the function of the auxiliary switch contact connected in series to the auxiliary relay contact can exhibit excellent operation reliability without hindering motor operation.

[Brief description of the drawings]

FIG. 1 is a circuit diagram of a motor operation circuit according to a first embodiment of the present invention.

FIG. 2 is a graph showing operation timings of a main contact and an auxiliary switch contact of a motor.

FIG. 3 is a circuit diagram of a motor operation circuit according to a second embodiment of the present invention.

FIG. 4 is a circuit diagram of a motor operation circuit according to a third embodiment of the present invention.

FIG. 5 is a graph showing operation timings of a main contact of a motor and limit switches for operation confirmation.

FIG. 6 is a circuit diagram of a motor operation circuit according to a fourth embodiment of the present invention.

FIG. 7 is an exploded perspective view of a conventional electric spring operating device.

FIG. 8 is a circuit diagram of a control circuit of a conventional switch operating device.

[Explanation of symbols]

1, 2, ... frame 3, 25, 25a, 25b, 25c ... motor 4 ... worm gear 5 ... worm wheel 6, 8 ... sprocket 7 ... chain 9 ... camshaft 10 ... eccentric cam 11 ... shaft 12 ... closing spring accumulating lever 13 ... closing spring 14 ... closing cam 15 ... connecting lever 16 ... output shaft 17 ... output lever 18 ... connecting rod 19 ... cut-off spring accumulating lever 20 ... cut-off spring 21, 27 ... positive electrode side power supply terminal 22, 22a, 22b, 22c ... Required auxiliary relays 23, 23a, 23b, 23c, 29, 29a, 29
b, 29c: Self-holding contacts 24, 24a, 24b, 24c: Auxiliary relay contacts (for input side motor operation) 26, 26a, 26b, 26c: Auxiliary switches (B contacts) 28, 28a, 28b, 28c: Off Auxiliary relays 30, 30a, 30b, 30c: Auxiliary relay contacts (for operating the off-side motor) 31, 31a, 31b, 31c: Auxiliary switches (A contacts) 32, 32a, 32b, 32c, 33, 33a, 33
b, 33c, 34, 34a, 34b, 34c, 35, 3
5a, 35b, 35c: auxiliary switch contacts 40, 40a, 40b, 40c, 43, 43a, 43
b, 43c ... required limit switches 41, 41a, 41b, 41c, 42, 42a, 42
b, 42c: Limit switch for cutting

Claims (1)

[Claims] 1. An operating device used for a switch operated by rotation of a main shaft, comprising: a motor; a driving spring stored by a rotating force of the motor; and a motor electrically connected to the motor. A motor operation circuit having an auxiliary relay contact for operation is provided, and the switch is operated by rotating the main shaft by discharging the drive spring stored by the rotational force of the motor. An operating device for a switch, wherein an own auxiliary switch contact is connected in series to the auxiliary relay contact in the motor operating circuit.