JP4146125B2 - Switch operating device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention has a switch operating mechanism, in particular, a switch and a grounding device function, and a switch that performs operations in three position states of ON (closed), OFF (open), and grounding with a single operating mechanism. The present invention relates to an operating device.
[0002]
[Prior art]
Conventionally, as an operation device for a switch, there is one having both functions of a disconnector and an installation device, and performing operation in three position states of on, off, and grounding with a single operation mechanism.
[0003]
FIGS. 8A and 8B are control circuit diagrams of an electric operation mechanism of such a conventional three-position switch. FIG. 8A is a control circuit for realizing the function of the disconnecting switch, and FIG. (C) is a motor control circuit / catch trip circuit that disengages the latch lever and latch pin, which will be described later, and (d) is a catch lever on the grounding device side. A motor control circuit / catch trip circuit for disengaging the latch pin and (e) is a motor circuit for driving the electric motor.
[0004]
Among these, the disconnector control circuit shown in (a) of FIG. 8A includes an on operation relay 32a and an on operation relay 33a. An operation start signal is applied to one end of the on-operation relay 32a via a contact 35c (normally closed) of the off-operation relay, and further to the positive power source P via an on-operation relay contact (normally open) 34a for self-holding. (Hereinafter, the normally open contact is simply referred to as a contact and (normally closed) is added). Further, a cut operation signal is applied to one end of the cut operation relay 33a via an on operation relay contact 34c (normally closed), and further connected to the positive power source P via a self-holding cut operation relay contact 35a. Yes. The other end of the on / off operation relay 32a is connected in common through an on / off command limit switch (normally closed) 30a, and the other end of the off operation relay 33a is connected in common through a cut / off command limit switch 31a. It is connected to the negative power source N via a switch 77a and a trip coil control relay contact (normally closed) 37d (CCEX) for preventing erroneous operation of the grounding device.
[0005]
The grounding device control circuit shown in (b) of FIG. 8B includes an on operation relay 32b and a turn-off operation relay 33b. An operation start signal is applied to one end of the input operation relay 32b via a cut operation relay contact 35d (normally closed), and further connected to the positive power source P via a self-holding input relay contact 34b. . Further, a cut operation signal is applied to one end of the cut operation coil 33b via an on operation relay contact 34d (normally closed), and further connected to the positive power source P via a self-holding cut operation relay contact 35b. ing. The other end of the ON operation relay 32b is connected in common via an ON / OFF command limit switch (normally closed) 30b, and the other end of the OFF operation relay 33b is connected in common via a OFF / END command limit switch 31b. It is connected to the negative power source N via a switch 77b and a trip coil control relay contact (normally closed) 37c (CCDX) for preventing an erroneous operation of the disconnector.
[0006]
In the disconnector side motor control circuit / catch trip circuit shown in (c) of FIG. 8A, the on-operation relay contact 34e and the on-off relay contact 35e are connected in parallel, and one end thereof is connected to the positive power source P. The other end is connected to the negative power source N via the trip coil control relay 36a. One end of the trip coil 25a is connected to the positive power source P via the trip coil control relay contact 37a, and the other end is connected to the negative power source N. Also, the disconnector side on / off operation relay contact 34g and the disconnector side latch pin interlocking limit switch 27a are directly connected, and the grounding device side disconnecting operation relay contact 35h and the grounding apparatus side latch pin interlocking limit switch 27d are connected in series. Are connected in parallel, one end thereof is connected to the positive power source P, and the other end is connected to the negative power source N via the motor positive direction rotation relay 38.
[0007]
In the grounding device side motor control circuit / catch trip circuit shown in (d) of FIG. 8 (b), the ON operation relay contact 34f and the OFF operation relay contact 35f are connected in parallel, and one end thereof is connected to the positive power source P. The other end is connected to the negative power source N via the trip coil control relay 36b. One end of the trip coil 25b is connected to the positive power source P via the trip coil control relay contact 37b, and the other end is connected to the load power source N. In addition, the grounding device side input relay contact 34h and the grounding device side latch pin interlocking limit switch 27b are connected in series, and the disconnecting device side disconnecting operation relay contact 35g and the disconnecting device side latch pin interlocking limit switch 27c are connected in series. Are connected in parallel, one end thereof is connected to the positive power supply P, and the other end is connected to the negative power supply N via the motor reverse rotation relay 39.
[0008]
In the motor circuit shown in (e) of FIG. 8A, one end of the electric motor 1 is connected to the positive power source PM via a motor forward rotation relay contact 40a and via a motor reverse rotation relay contact 41b. Connected to the negative power source NM. The other end of the electric motor 1 is connected to the positive power source PM through the motor reverse rotation relay contact 41a, and is connected to the negative power source NM through the motor positive rotation relay contact 40b.
[0009]
FIG. 9 is a schematic configuration diagram showing an electric operation mechanism of a conventional three-position switch.
[0010]
In FIG. 9, 1 is an electric motor, 13 is an operation shaft coupled to the electric motor 1, and a worm gear 14 is attached to the operation shaft 13.
[0011]
Reference numeral 15 denotes a main shaft which is disposed so that its axis is perpendicular to the operation shaft 13 and is rotatably supported. The main shaft 15 is a movable terminal of a switch having both functions of a disconnecting switch and a grounding device (not shown). It is connected to. A worm wheel 16 is mounted on the main shaft 15, and the worm wheel 16 and the worm gear 14 mounted on the operation shaft 13 are engaged with each other so that the rotation of the operation shaft 13 can be transmitted to the main shaft 15.
[0012]
Disc-shaped holding members 17 </ b> D are attached to the main shaft 15 on the opposite sides in the axial direction when viewed from the worm wheel 16. The holding member 17D has a larger diameter than that of the worm wheel 16, and a roller-like protrusion 17 protruding in the axial direction is provided at an edge of the holding member 17D. In addition, a pair of catch shafts 18a and 18b whose axis is parallel to the main shaft 15 are fixed to a frame (not shown) or the like at a portion where the distance corresponding to the outside of the holding member 17D when viewed from the main shaft 15 is equal. That is, the catch shafts 18a and 18b are fixed so as to be parallel to each other and maintain a predetermined interval.
[0013]
These catch shafts 18a and 18b support tilt levers 19a and 19b, respectively, which can be tilted so that the protrusions 17 can be interposed therebetween with their tip surfaces facing each other. Further, stoppers 22a and 22b are provided outside the catch shafts 18a and 18b to limit the inclination of the rear ends of the catch levers 19a and 19b. Further, torsion springs 21a and 21b are wound around the catch shafts 18a and 18b, respectively, and the rear ends of the catch levers 19a and 19b are brought into contact with the stoppers with a predetermined pressure, respectively. As a result, the tip ends of the catch levers 19a and 19b are opposed to each other, and can be retracted radially outward when viewed from the main shaft 15 when the projections 17 contact each other with a predetermined pressure.
[0014]
In addition, the corner | angular part which opposes the protrusion 17, ie, the upper corner | angular part of drawing, is formed in a circular arc surface among the front-end | tip parts of catch lever 19a, 19b, and the lower corner | angular part of drawing has a bowl shape.
[0015]
Latch pins 20a and 20b are provided at positions where the tip portions of the catch levers 19a and 19b can be retracted. A part of the latch pins 20a and 20b in the axial direction, that is, a portion where the tip ends of the catch levers 19a and 19b are retracted downward is cut out in a half-moon shape. These half-moon-shaped portions are positioned so that their outer surfaces are back-to-back with each other, and the upper edge of the half-moon-shaped portion overlaps the hook-shaped corners of the catch levers 19a, 19b, and in one direction by the torsion springs 22a, 22b. Can be rotated. In this case, the latch pins 20a and 20b have latch levers 24a and 24b that protrude outward in the lateral direction.
[0016]
The leading ends of the latch levers 24a and 24b abut against the leading ends of the plungers 26a and 26b that move up and down in accordance with the excitation state of the trip coils 25a and 25b, and the torsion springs 22a and 22b maintain that state. A compression force is applied to the latch levers 24a and 24b.
[0017]
Accordingly, when the plunger 26a is pushed up, the latch pin 20a rotates counterclockwise, and the tip of the catch lever 19a can be retracted downward from the illustrated position. Similarly, when the plunger 26b is pushed up, the latch pin 20b rotates clockwise, and the tip of the catch lever 19b can be retracted downward from the illustrated position.
[0018]
On the other hand, on the side opposite to the latch pins 20a and 20b when viewed from the main shaft 15, the protrusion 17 is brought into contact with a position slightly deviated to the left from the center in the drawing to prevent the main shaft 15 from rotating once. A stopper block 23 is fixed to a frame or the like.
[0019]
Further, a manual operation shaft 28a for rotating the main shaft 15 by inserting a manual operation handle is formed at the tip of the operation shaft 13 to which the worm gear 14 is attached, and another manual operation shaft 28b is formed outside the trip coil 25b. These manual operation shafts 28a and 28b are coupled to each other by a power transmission means 28c such as a chain so that a rotational force can be transmitted.
[0020]
In this case, the trip coil 25a is attached so that the plunger 26a is substantially parallel to the manual operation shaft 28a. Similarly, the trip coil 25b is provided so that the plunger 26b is substantially parallel to the manual operation shaft 28b. Installed.
[0021]
In addition, shutter plates 76a and 76b are provided in front of the manual operation shafts 28a and 28b so that the manual operation shafts 28a and 28b can be operated only when manual operation is possible due to the interlock condition. Cams 81a and 81b are attached to the shutter plates 76a and 76b so that the plungers 26a and 26b can be pushed to an excited state by operating the shutter plates 76a and 76b until the manual operation is possible.
[0022]
Further, after the latch pins 20a and 20b are completely operated, the latch pin interlocking limit switches 27a (for turning on the disconnector), 27b (for turning on the ground), 27c (for turning off the disconnector), 27d ( (For grounding off) is installed.
[0023]
FIG. 10 shows a state where the disconnector operates from the “OFF” position to the “ON” position in response to a command from a distance. When the “ON” operation command is input, the ON operation command relay contact 34g and the trip coil control relay contact 37a are closed, the trip coil 25a is excited, the plunger 26a is pressed, and the latch lever 24a is pressed. The latch pin 20a rotates counterclockwise. As a result, the latch pin 20a and the catch lever 19a are disengaged so that the catch lever 19a can move freely around the catch shaft 18a, the main shaft 15 can be rotated counterclockwise, and the disconnector is inserted. Can be operated.
[0024]
At this time, the latch pin interlocking limit switch 27a is operated by the rotation of the latch pin 20a, the opened contact is closed, and a current flows to the motor forward rotation relay 38. As a result, the latch pin 20a and the catch lever 19a are disengaged so that the catch lever 19a can move freely around the catch shaft 18a, the main shaft 15 can be rotated counterclockwise, and the disconnecting device ' The electric motor 1 rotates until it enters the “ON” state.
[0025]
FIG. 11 shows a state in which the disconnector operates from the “ON” position to the “OFF” position in response to a command from a distance. When the “OFF” operation command is input, the OFF operation relay contact 35g and the trip coil control relay contact 37a are closed, and the trip coil 25a is excited. As a result, the plunger 26a is pushed in and the latch lever 24a is pushed, whereby the latch pin 20a rotates counterclockwise.
[0026]
At this time, the latch pin interlocking limit switch 27b is operated by the rotation of the latch pin 20a, the opened contact is closed, and a current flows through the motor reverse rotation relay 39. As a result, the latch pin 20a and the catch lever 19a are disengaged so that the catch lever 19a can move freely around the catch shaft 18a, the main shaft 15 can be rotated clockwise, and the disconnector is The motor rotates until it is in the “on” state.
[0027]
[Problems to be solved by the invention]
The above description is an operation mechanism of a three-position switch having both functions of a disconnecting switch and a grounding device, and performing operations in three position states of on (closed), off (open), and grounding with one operating device. Such a switch operating device has the following problems.
[0028]
(1) The number of limit switches is large (two each of the latch pin interlocking limit switches 27a and 27d on the disconnector side and the latch pin interlocking limit switches 27b and 27c on the grounding device side), which hinders the reduction of the equipment. At the same time, it causes a decrease in workability during maintenance inspection.
[0029]
(2) If the stopper is accidentally terminated at the position where the stopper is not fully applied when manually operating the disconnect switch “turn off”, the next attempt to manually perform the “turn on” operation will be in the opposite direction, that is, the ground disconnect direction. If you turn the handle, the disconnector side may be thrown in. The same applies to the case where the grounding device and disconnector are reversed.
[0030]
(3) If the manual handle is used to forcefully press the disconnector stopper to finish the operation, then the shutter of the grounding device is accidentally opened, the stopper is released and then returned to its original position, then the disconnector is manually turned on. There is a risk of accidentally turning the handle in the opposite direction, that is, in the direction of turning off the ground, in order to perform the operation. The same applies to the case where the grounding device and disconnector are reversed.
[0031]
The present invention solves the above problems and provides a simple and reliable switch operating device that can automatically and manually operate a contact having three position states with a single operating mechanism. Objective.
[0032]
[Means for Solving the Problems]
In order to achieve the above object, the present invention constitutes an operating device for a switch by the following means.
[0033]
In the invention corresponding to claim 1, the main shaft for transmitting the driving force from the driving source to the movable terminal of the switch body having both functions of the disconnecting switch and the grounding device is inserted, cut off and grounded by one operating mechanism. In a switch operating device operable in a position state, when the operation mechanism reaches an end position where the operation mechanism moves from an on state to a cut state, the disconnector disconnecting-side stopper mechanism that fixes the main shaft and restrains the operation; When the operation mechanism reaches an end position where the operation mechanism moves from the grounded state to the disconnected state, the main shaft is fixed and the operation is stopped, and the grounding device disconnecting side stopper mechanism, the disconnector disconnecting side stopper mechanism, and the grounding device disconnecting side stopper mechanism are A solenoid coil that is provided in correspondence with each other and operates the disconnector disconnecting side stopper mechanism and the grounding device disconnecting side stopper mechanism by excitation to release the fixation of the main shaft; A limit switch with a C contact provided corresponding to the disconnector disconnecting side stopper mechanism and the grounding device disconnecting side stopper mechanism, each having a contact that operates and closes when the main shaft is unlocked by the operation of the stopper mechanism; A control means for operating the stopper mechanism when the solenoid coil is energized to release the fixing of the spindle; and the drive source when the limit switch with the C contact is operated and the contact is closed by the operation of the stopper mechanism. Drive mechanism control means for operating the operating mechanism to turn the switch body on, off or ground.
[0034]
With such a configuration, by using the C contact limit switch, only four stopper-linked limit switches are required in the past, and it is possible to reduce the space to be checked in the operating device and the locations to be checked. it can.
[0035]
According to a second aspect of the present invention, in the switch operating mechanism according to the first aspect of the present invention, a limit switch with a C contact provided corresponding to the disconnector disconnecting side stopper mechanism is connected to a manual operation interface on the grounding device side. A limit switch with a C contact provided in series with the locking means and the drive mechanism control means and corresponding to the grounding device disconnecting side stopper mechanism is provided in series with the manual operation interlock means and the drive mechanism control means on the disconnector side.
[0036]
With this configuration, when the disconnector is turned off, the signal flowing to the control circuit of the other grounding device is cut off when the stopper is not securely engaged, that is, when the operation is not completely completed. Therefore, both manual operation and remote operation cannot be performed, and there is no possibility of malfunction.
[0037]
According to a third aspect of the present invention, in the switch operating mechanism according to the first aspect of the present invention, a limit switch with a C contact provided corresponding to the disconnector disconnecting side stopper mechanism is connected to a manual operation interface on the grounding device side. A limit switch with a C contact provided in series with the locking means and corresponding to the grounding device disconnecting side stopper mechanism is provided in series with the manual operation interlocking means on the disconnector side.
[0038]
With this configuration, when the disconnector is turned off, the signal flowing to the control circuit of the other grounding device is cut off when the stopper is not securely engaged, that is, when the operation is not completely completed. Therefore, only manual operation cannot be performed. For this reason, there is no possibility of causing a malfunction by releasing the stopper on the side of the disconnector when the grounding device is manually operated.
[0039]
In the invention corresponding to claim 4, the main shaft for transmitting the driving force from the driving source to the movable terminal of the switch body having both functions of the disconnecting switch and the grounding device is inserted, cut off, and grounded by one operating mechanism. In a switch operating device operated to a position state, when the operation mechanism reaches an end position where the operation mechanism moves from an on state to a cut state, the disconnector disconnection side stopper mechanism that fixes the main shaft and restricts the operation, and the operation When the mechanism reaches the end position where it operates from the grounded state to the disconnected state, the main shaft is fixed and the grounding device disconnecting side stopper mechanism that restrains the operation, the disconnector disconnecting side stopper mechanism, and the grounding device disconnecting side stopper mechanism are respectively The contactor is operated by excitation, and the disconnector disconnecting side stopper mechanism and the grounding device disconnecting side stopper mechanism are operated by the contact driving force. A relay for releasing the fixing of the main shaft, a control means for operating the stopper mechanism to release the fixing of the main shaft when the relay is excited by the command, and the relay contact being closed by the operation of the stopper mechanism. Drive mechanism control means for operating the operating mechanism by a drive source to turn the switch body on, off, or to a grounding position.
[0040]
With such a configuration, it is possible to reduce the number of parts of the electrical component, and it is possible to reduce the space.
[0041]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0042]
FIG. 1 is a control circuit diagram showing a first embodiment of a switch operating device according to the present invention. The same parts as those in FIG. State.
[0043]
The difference from FIG. 8 is that in the disconnector side motor control circuit / catch trip circuit shown in FIG. 1A, the contact 27j that opens when the latch pin 20a rotates instead of the limit switches 27a and 27d is closed. When an interlocking limit switch 27A having a contact 27g is provided and the latch pin 20a rotates in place of the limit switches 27b and 27c in the grounding device side motor control circuit / catch trip circuit shown in FIG. An interlocking limit switch 27B having an opening contact 27h and a closing contact 27i is provided.
[0044]
FIG. 2 is a block diagram showing the electric operating mechanism of the position switch according to the embodiment. The same parts as those in FIG. 9 are denoted by the same reference numerals and the description thereof is omitted, and only different points will be described here.
[0045]
In FIG. 9, four latch pin interlocking limit switches 27a (for disconnecting switch), 27b (for connecting ground), 27c (for disconnecting switch), and 27d (for disconnecting ground) are provided, but in FIG. Two latch pin interlocking limit switches 27A and 27B having operation contacts are provided.
[0046]
Next, the operation of the switch operating device configured as described above will be described.
[0047]
FIGS. 3A and 3B show a mechanism and a control circuit in a state in which they are operated from the position of the disconnector “OFF” to the position “ON” in response to a command from a distance. When the “ON” operation command is input, the ON operation command relay contact 34g and the trip coil control relay contact 37a are closed, the trip coil 25a is excited, the plunger 26a is pressed, and the latch lever 24a is pressed. The latch pin 20a rotates counterclockwise. As a result, the latch pin 20a and the catch lever 19a are disengaged so that the catch lever 19a can move freely around the catch shaft 18a, and the main shaft 15 becomes free.
[0048]
At this time, the latch pin interlocking limit switch 27A is operated by the rotation of the latch pin 20a, the opened contact 27g is closed, and a current flows to the motor forward rotation relay 38. As a result, the electric motor rotates in the direction in which the main shaft 15 rotates counterclockwise, that is, in the direction in which the disconnector is turned on.
[0049]
FIGS. 4A and 4B show the mechanism and the control circuit in a state in which they are operated from the position of the disconnector “ON” to the position “OFF” by a command from a distance. When an “OFF” operation command is input, the OFF operation relay contact 35g and the trip coil control relay contact 37a are closed, the trip coil 25a is excited, the plunger 26a is pressed, and the latch lever 24a is pressed to latch pin. 20a rotates counterclockwise. As a result, the latch pin 20a and the catch lever 19a are disengaged so that the catch lever 19a can move freely around the catch shaft 18a, and the disconnect switch-off operation can be performed.
[0050]
At this time, a current flows to the motor reverse rotation relay 39 through the closed contact 27i of the latch pin interlocking limit switch 27B on the grounding device side which is not related to the operation of the latch pin 20a. As a result, the electric motor rotates in the direction in which the main shaft 15 rotates in the clockwise direction, that is, in the direction in which the disconnector is turned on.
[0051]
The above is the action on the disconnector side, but the action on the grounding device side is also the same, and the description thereof is omitted here.
[0052]
By operating the latch pin-linked limit switch as a C contact in this way, four limit switches were required in the past, but two limit switches can provide the same functions as in the past, saving space. In addition, the number of inspection points can be reduced.
[0053]
5 (a) and 5 (b) are a configuration diagram and a control circuit diagram showing a second embodiment of the switch operating device according to the present invention. The same parts as those in FIGS. 1 and 2 are denoted by the same reference numerals. Therefore, the explanation is omitted, and only different points are described here.
[0054]
In the second embodiment, relays 43a and 43b as shown in FIG. 5 (a) are used in place of the solenoid coils 25a and 25b, one each for the disconnector side and the grounding device side for releasing the stopper shown in FIG. Is arranged.
[0055]
Further, in the motor control circuit / catch trip circuit that disengages the catch lever 19a on the disconnector side and the latch pin 20a as shown in FIG. 5 (b), the contacts 43g and 43j of the relay 43a are connected to FIG. In the motor control circuit / catch trip circuit that is connected in place of the contact points 27g and 27j and disengages the catch lever 19b on the grounding device side and the latch pin 20b in the same manner, the contacts 43h and 43i of the relay 43b are connected. Instead of the contacts 27i and 27h in FIG.
[0056]
In such a configuration, the stoppers can be released by rotating the latch pins 20a, 20b using the force of the coil that operates the relay contacts 43g, 43j, 43i, 43h.
[0057]
Therefore, since the number of parts of the electrical component can be reduced, the space can be reduced.
[0058]
FIG. 6 is a control circuit diagram and a configuration diagram of an operation mechanism showing a third embodiment of a switch operating device according to the present invention. The same parts as those in FIG. 1 and FIG. Is omitted, and only the differences are described here.
[0059]
In the third embodiment, the connection point of the grounding device side shutter-interlocking limit switch 77b and the interlock coil 84b wired in parallel as shown in (b) of FIG. 1 (b), and the relay contact for trip coil control A disconnector side latch pin interlocking limit switch 27e (normally closed) is connected between the switch 37c and the switch 37c as shown in FIG. 6 (a), and in parallel as shown in the disconnector side control circuit (A). The grounding device side latch pin interlocking limit switch 27f is connected between the connection point of the wired disconnector side shutter interlocking limit switch 77a and the interlock coil 84a and the trip coil control relay contact 37d.
[0060]
According to such a configuration, it may be accidentally terminated at a position where the stopper is not completely applied when manually operating the disconnector 'off', or after being manually pressed against the disconnector stopper at a stroke with the manual handle, Opening and returning the shutter of the grounding device, and then manually performing the disconnector 'on' operation, the manual operation and remote operation are performed in order to cut off all signals flowing to the control circuit of the other device (grounding device). Can not be performed together, there is no risk of malfunction.
[0061]
As a result, the device on the opposite side of the three positions cannot be operated unless the “off” operation is completed by a manual operation, so that an erroneous operation cannot be performed, and operational safety can be improved.
[0062]
FIG. 7 is a control circuit diagram and schematic configuration diagram showing a fourth embodiment of a switch operating device according to the present invention. The same parts as those in FIG. 1 and FIG. Only the differences will be discussed here.
[0063]
In the fourth embodiment, as shown in the grounding device side control circuit (b) in FIG. 7A, the disconnector side latch pin interlocking limit is provided between the interlock coil 84b and the trip coil control relay contact 37c. The switch 27e (normally closed) is connected, and as shown in the disconnector side control circuit (A), the grounding device side latch pin interlocking limit switch 27f (normally) is provided between the interlock coil 84a and the trip coil control relay contact 37d. Closed) is connected.
[0064]
Also in the operation mechanism section shown in FIG. 7B, the disconnector side latch pin interlocking limit switch 27e and the grounding device side latch pin interlocking limit switch 27f are provided in place of the limit switches 27A and 27B with the C contact in FIG.
[0065]
With such a configuration, when the disconnector 'off' is manually operated, it is terminated at a position where the stopper does not completely cover, or after pressing the manual handle to the disconnector stopper at once and the operation is terminated, the grounding device is mistakenly Even if you try to manually open the disconnector 'turn on' next time, the manual operation and the remote operation are both performed to cut off the signal flowing through the interlock circuit of the other device (grounding device). It can not be performed and there is no risk of malfunction.
[0066]
As a result, the device on the opposite side of the three positions cannot be operated unless the “off” operation is completed by a manual operation, so that an erroneous operation cannot be performed, and operational safety can be improved.
[0067]
【The invention's effect】
As described above, according to the present invention, it is possible to provide a simple and reliable switch operating device that can automatically and manually operate a contact having three position states with a single operating mechanism.
[Brief description of the drawings]
FIG. 1 is a control circuit diagram showing a first embodiment of a switch operating device according to the present invention;
FIG. 2 is a configuration diagram of an operation mechanism showing the embodiment.
FIGS. 3A and 3B show a state in which the disconnector is operated from a position of “OFF” to a position of “ON” in response to a command from a distance, in which FIG. 3A is a configuration diagram of an operation mechanism, and FIG. circuit diagram.
4A and 4B show a state in which the switch is operated from the position of “ON” to the position of “OFF” according to a command from a distance in the same embodiment; FIG. 4A is a configuration diagram of an operation mechanism, and FIG. circuit diagram.
5A and 5B show a second embodiment of a switch operating device according to the present invention, wherein FIG. 5A is a configuration diagram showing an operating mechanism, and FIG. 5B is a control circuit diagram;
6A and 6B show a third embodiment of a switch operating device according to the present invention, wherein FIG. 6A is a control circuit diagram, and FIG. 6B is a configuration diagram of an operating mechanism.
7A and 7B show a fourth embodiment of a switch operating device according to the present invention, wherein FIG. 7A is a control circuit diagram, and FIG. 7B is a configuration diagram of an operating mechanism.
FIG. 8 is a control circuit diagram showing a conventional operation device for a three-position switch.
FIG. 9 is a configuration diagram showing an operating device of the three-position switch.
FIGS. 10A and 10B show a state in the middle of an electric on / off operation of a conventional three-position switch operating device, where FIG. 10A is a configuration diagram of an operating mechanism, and FIG. 10B is a control circuit diagram;
FIGS. 11A and 11B show a state in the middle of an electric cutting operation of a conventional three-position switch operating device, where FIG. 11A is a configuration diagram of an operating mechanism, and FIG. 11B is a control circuit diagram;
[Explanation of symbols]
1 ... Electric motor
13 ... Operation axis
14 ... Worm gear
15 ... Spindle
16 ... Worm wheel
17 ... Protrusions
17D ... Holding part
18 ... Catch shaft
19 ... Catch lever
20 ... Latch pin
21, 22 ... Torsion spring
23 ... Stopper block
24 ... Latch lever
25 ... Trip coil
26 ... Plunger
27 ... Latch pin interlocking limit switch
28 ... Manual operation axis
28c ... Power transmission means
29 ... On / off end command limit switch cam
30 ... ON / OFF command limit switch
31 ... Cut end command limit switch
32 ... On-operation relay coil
33 ... Cutting operation relay coil
34 ... Relay relay contact
35 ... Cutting operation relay contact
36 ... Relay for trip coil control
37 ... Relay contact for trip coil control
38 ... Relay for forward rotation of motor
39 ... Relay for reverse motor rotation
40 ... Relay contact for forward rotation of motor
41 ... Relay contact for reverse rotation of motor
42 ... Manual operation shaft
43 ... Relay
76 ... Shutter plate
77 ... Shutter-linked limit switch
82 ... Shutter plate stopper
83 ... Shutter plate return spring
84 ... Interlock coil

Claims (4)

A switch that can be operated in three positions: turning the main shaft that transmits the driving force from the drive source into the movable terminal of the switch body, which combines the functions of a disconnector and a grounding device, with one operating mechanism. In the operating device,
A disconnector disconnecting side stopper mechanism that fixes the main shaft and restrains the operation when the operation mechanism reaches an end position where the operation mechanism moves from the on state to the off state, and an end position where the operation mechanism operates from the ground state to the off state The earthing device disconnecting side stopper mechanism which fixes the main shaft and restrains its operation when reaching, the disconnector disconnecting side stopper mechanism and the earthing device disconnecting side stopper mechanism are provided corresponding to the disconnecting device disconnecting side by excitation. A solenoid coil that operates the stopper mechanism and the grounding device disconnecting side stopper mechanism to release the fixing of the main shaft, and the disconnector disconnecting side stopper mechanism and the grounding device disconnecting side stopper mechanism are provided respectively corresponding to the stopper mechanism. A limit switch with a C contact having a contact that operates and closes when the spindle is released by operation; Control means for operating the stopper mechanism to release the main shaft when the noid coil is excited, and the operation of the limit switch with the C contact by the operation of the stopper mechanism to close the operation by the drive source when the contact is closed. An operating device for a switch, comprising drive mechanism control means for operating a mechanism to move the switch body to an on, off or ground position. The switch operating device according to claim 1, wherein a limit switch with a C contact provided in correspondence with the disconnector disconnecting stopper mechanism is provided in series with the manual operation interlock means and the drive mechanism control means on the grounding device side, A switch operating device characterized in that a limit switch with a C contact provided corresponding to a grounding device cut-off side stopper mechanism is provided in series with a manual operation interlock means and a drive mechanism control means on the disconnector side. 2. The switch operating device according to claim 1, wherein a limit switch with a C contact provided in correspondence with the disconnector disconnecting side stopper mechanism is provided in series with the manual operation interlock means on the grounding device side, and the grounding device disconnecting side stopper is provided. A switch operating device characterized in that a limit switch with a C contact provided in correspondence with a mechanism is provided in series with a manual operation interlocking means on a disconnector side. Operation of the switch that operates the main shaft that transmits the driving force from the drive source to the movable terminal of the switch body that combines the functions of the disconnector and the grounding device with one operating mechanism, which is operated in three positions: disconnection and grounding In the device
A disconnector disconnecting side stopper mechanism that fixes the main shaft and restrains the operation when the operation mechanism reaches an end position where the operation mechanism moves from the on state to the off state, and an end position where the operation mechanism operates from the ground state to the off state The grounding device disconnecting side stopper mechanism that fixes the main shaft and restrains its operation when it reaches, the disconnector disconnecting side stopper mechanism and the grounding device disconnecting side stopper mechanism are provided in correspondence with each other and operate the contact by excitation. The contact driving force causes the disconnector disconnecting stopper mechanism and the grounding device disconnecting stopper mechanism to operate to release the fixing of the spindle, and the relay mechanism is operated when the relay is excited by the command. When the relay contact is closed by the operation of the control means for releasing the fixing of the spindle and the stopper mechanism, the driving source The operating mechanism is operated input said switch body, switch of the operating device, characterized in that a drive mechanism control means for operating the switching or ground position.

Images