JPH11203990A - Operating mechanism for switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make smaller and lighter a contact three-position rotary switching device, by putting to common use an operating mechanism for a disconnecting switch and an operating mechanism for an earthing switch. SOLUTION: An operator loosens bolts used to fix a disconnecting-switch(DS) operating mechanism part base 8 to a DS/ES(earthing switch) common base 11 and turns a handle 9 by hand until the DS operating mechanism part base 8 reaches the position of a stopper pin 10b where ES contact points turn into an 'ON' state. The DS operating mechanism part base 8 is rotated centering around an output shaft 6. An operating mechanism for DS/ES is constructed on a DS/ES body switching drive shaft of a contact three-position rotary gas insulated switching device and has a function that the ES contact points are opened/closed by manual operation of the operator rotating a DS operating mechanism as a whole together with the DS operating mechanism part base 8. Because a spring energy storing mechanism is constructed on the DS/ES common base 11, a load is reduced when the manual operation is conducted to open/close an ES, attaching work of a base for a DS is made easier after opening/closing of the DS is completed, and a malfunction is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch operating mechanism applied to a gas insulated switchgear of a three-contact rotary type.

[0002]

2. Description of the Related Art A disconnecting switch (hereinafter referred to as D) used in a gas insulated switchgear (hereinafter referred to as GIS) of a three-position contact rotary type.
S) and a grounding switch (hereinafter, referred to as ES) each have a switch operating mechanism. Since the bus DS and the line-side DS do not like the intermediate stop of the contact, an operating mechanism of a system that opens and closes the contact by using the energy stored in the energy storage spring as a driving source is used.

FIG. 4 is a perspective view showing the structure of a conventional DS operating mechanism. In the DS operation mechanism 12 shown in FIG.
The ratchet wheel 14 is rotated via the ratchet 13 by a driving force of a motor (not shown) or a manual driving force. The rotational force is the ratchet lever 15,
The power is transmitted to the ratchet-side link rod 16 and the shaft-side lever 17 and is transmitted to the energy storage cam 18.

The output shaft 19 is axially penetrated through the energy storage cam 18, the spring cam 20, and the output cam 21, but the energy storage cam 18, the spring cam 20, and the output cam. A bearing is provided on the outer periphery of the output shaft 19 in the inside 21. Therefore, the energy storing cam 18 idles around the output shaft 19, and the output shaft 19 and the energy storing cam 18 do not interlock. Similarly, output shaft 1
9 and the spring-side cam 20, the output-side cam 21, and the output-side lever 22 do not interlock. Therefore, the rotational force of the energy storage cam 18 is transmitted to the spring cam 20, the output cam 21, and the output lever 22.

The torque transmitted to the output side lever 22 is:
The energy is transmitted to the spring shaft 25 via the spring-side link rod 23 and the spring-side lever 24, and the energy is stored in the storage spring 26. At this time, since the output side cam 21 and the output shaft side cam 27 do not mesh until the output side lever 22 and the spring side link rod 23 reach the dead point, the driving force is not transmitted to the disconnecting switch contact side.

On the other hand, when the output side lever 22 and the spring side link rod 23 are aligned in a straight line, that is, when the dead point is reached, the output side cam 21 and the output shaft side cam 27 mesh with each other, and the energy storage spring 26 Is stored in the spring shaft 25 and the spring-side lever 2.
4, transmitted from the output side cam 21 to the output shaft side cam 27 via the spring side link rod 23 and the output side lever 22. Thus, the output shaft 19 is driven to rotate. The output cam 21 and the output shaft cam 27 are engaged with each other, so that the output shaft 19 and the output cam 2 are engaged.
1 and the spring-side cam 20 are interlocked.

As described above, the output shaft 19 driven by the urging rotational force of the accumulating spring 26 rotates in the same direction earlier than the accumulating cam 18 rotated by the aforementioned motor and manual force. The engagement between the side cam 18 and the spring side cam 20 is released. Then, in a state where the output-side cam 21 and the output-shaft-side cam 27 are engaged with each other, the output shaft 19 that is solely associated with the output-shaft-side cam 27 is driven to open / close the disconnector contact. The output shaft 19 rotates the damper lever 28 after opening and closing the disconnector contact. Eventually, the damper lever 28 becomes the damper 29a or 29b.
When the disconnecting switch contact comes to a predetermined position, the entire disconnecting mechanism stops at the damper end.

[0008] Further, the working ESs arranged on both sides of the gas insulated circuit breaker (hereinafter referred to as CB) do not require an opening / closing speed, and are driven by an operator's manual operation. FIG. 5 is a perspective view showing the configuration of the ES operation mechanism. In the ES operation mechanism 30 shown in FIG. 5, the operator attaches the manual operation handle 31 to the ES output shaft 32 and rotates the ES output shaft 32 to apply a rotational force. ES output shaft 3
The rotation range of 2 is limited because the positioning lever 33 linked with the ES output shaft 32 can rotate only between the two positioning stoppers 35a and 35b. Therefore, the positioning stoppers 35a and 35b
The opening / closing position of the S contact is set.

[0009]

As described above, in the DS and ES in which the contact structure inside the disconnecting switch and the grounding switch mechanism is a direct acting type, each of the switches has an operating mechanism for the switch. However, there is a problem that the space required for installation is widened and waste occurs. In addition, since the weight increases, there is a problem that the transportation is greatly restricted. SUMMARY OF THE INVENTION An object of the present invention is to provide a switch operating mechanism that reduces the size and weight of the entire switchgear of a three-contact rotary type.

[0010]

Means for Solving the Problems To solve the above problems and achieve the object, a switch operating mechanism of the present invention is constituted as follows. (1) The switch operating mechanism of the present invention is a switch operating mechanism used in a contact three-position rotary switch, and the operating mechanism for the disconnecting switch and the operating mechanism for the grounding switch are shared. (2) The switch operating mechanism of the present invention is the mechanism described in (1) above, and further includes a spring energy storage mechanism, and the spring energy storage mechanism is arranged on a common base of the disconnecting switch and the grounding switch. . (3) The switch operating mechanism of the present invention is the mechanism described in (1) or (2) above, and further includes a screw for fixing the disconnecting switch base and a handle for use in turning on and off the ground switch. Were combined.

[0011] As a result of taking the above measures, the following operations occur. (1) According to the switch operating mechanism of the present invention, the operating mechanism for the disconnecting switch and the operating mechanism for the grounding switch can be commonly used on one stand, and can be configured on the same output shaft.
It is possible to reduce the size and weight of the entire position rotation type opening / closing device. (2) According to the switch operating mechanism of the present invention, the spring energy storing mechanism is arranged and configured on the common base for the disconnecting switch and the grounding switch, thereby reducing the load at the time of manual operation of the grounding switch. Can be done. (3) According to the switch operating mechanism of the present invention, the screw for fixing the disconnecting switch base in the switching operating mechanism and the handle for rotating the ground switch base during the operation of the ground switch are combined and shared. Further, the work of mounting the disconnector stand at the end of the on / off operation of the grounding switch can be facilitated, and malfunction can be prevented.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) FIG. 1 is used in a gas insulated switchgear (hereinafter, referred to as GIS) of a contact three-position rotary type according to a first embodiment of the present invention. FIG. 2 is a perspective view showing a switch operating mechanism in a disconnector (hereinafter, referred to as DS) and a grounding switch (hereinafter, referred to as ES). In the opening / closing operation of the disconnector, the rotational force output from the motor 1 is transmitted to the worm wheel 3 via the worm 2. Then, the cam 31 attached to the worm wheel 3 hits a cam (not shown) of the energy-storing lever 4, rotates the energy-storing lever 4, and stores energy in the energy-storing spring (coil spring) 5.

When the energy-storing spring 5 and the energy-storing lever 4 are aligned and reach a dead point, the energy-storing lever 4 rotates in the same direction before the worm wheel 3, and By rotating the output shaft 6 via the cam 61, DS
Drives the main unit side contact. The DS body and the operating mechanism eventually stop at the end of the damper 7a.

The structure of the speed reducer is not limited to the combination of the worm 2 and the worm wheel 3, but may be a combination of a ratchet, a ratchet wheel, a lever, and a link rod as shown in FIG. A similar configuration can be made with a combination of sprockets. Also, the means for storing energy is not limited to a coil spring, and a structure using a spiral spring or a disc spring can be similarly configured. Hereinafter, a method of turning on the ES contact in the “OFF” state of the DS contact portion will be described.

FIG. 2 is a front view showing the switch operating mechanism shown in FIG. 1 in a state where the DS contact is "OFF" and the ES contact is "OFF". In FIG. 2, the operator sets the DS operation mechanism base (base) 8 to the DS / ES common base (base).
11, loosen a bolt (not shown), hold the handle 9, and as shown in FIG.
The contact is turned to the position of the stopper pin 10b at which the contact is turned on. At this time, the DS operation mechanism base 8 rotates about the axis of the output shaft 6 shown in FIG. That is, the switch operating mechanism is the ES operating mechanism 3 shown in FIG.
The structure is such that the DS operation mechanism shown in FIG.

According to the first embodiment, the DS / ES on the drive shaft for opening / closing the DS / ES body of the contact three-position rotary GIS is provided.
The operating mechanism for S is configured, and the operator has the function of opening and closing the ES contact by manually rotating the entire DS operating mechanism together with the base.
The weight and the size and weight of the GIS can be reduced.

(Second Embodiment) In the second embodiment, the DS speed reducer shown in FIG.
By constructing on the common base (base) 11 of DS and ES instead of above, the rotational load applied to the handle 9 at the time of opening / closing operation of ES is reduced. Also, the ES auxiliary switch and the terminal block are not on the DS operation mechanism base (base) 8 but on the D
The same effect can be obtained by configuring on the common base 11 of S and ES.

(Third Embodiment) In the third embodiment, the DS operating mechanism base (base) 8 shown in FIG.
The above-mentioned bolt fixed at the time of only the operation and the handle 9 for rotating the DS operation mechanism base 8 at the time of the ES opening / closing operation are combined and shared. Thereby, the operation of fixing the DS operation mechanism base 8 when the ES opening / closing operation is completed can be simplified, and an operation error can be prevented.

The present invention is not limited to the above embodiments, but may be modified as needed without departing from the scope of the invention. (Summary of Embodiment) The configuration, operation and effect shown in the embodiment are summarized as follows. [1] The switch operating mechanism shown in the embodiment is a switch operating mechanism used in a contact three-position rotary switch, and includes an operating mechanism (12) for a disconnecting switch and an operating mechanism (30) for a ground switch. ) And shared.

Therefore, according to the switch operating mechanism, the disconnecting switch operating mechanism (12) and the grounding switch operating mechanism (30), which have conventionally been separate, can be commonly used on one stand (11). Accordingly, the switchgear can be configured on the same output shaft (6) as the driving force transmission shaft of the switch operating mechanism, and the overall size and weight of the switchgear of the three-contact rotary type can be reduced. [2] The switch operating mechanism shown in the embodiment is the mechanism described in the above [1], and the spring energy storing mechanism (4,
5), and the spring energy storage mechanism (4, 5) is disposed on a common base (11) of the disconnecting switch and the grounding switch.

Therefore, according to the switch operating mechanism, the spring accumulating mechanisms (4, 5) are arranged on the common base (11) for the disconnecting switch and the grounding switch, so that the grounding switch can be manually operated. The load at the time of the on / off operation can be reduced. [3] The switch operating mechanism shown in the embodiment is the mechanism according to the above [1] or [2], and further includes a screw for fixing the disconnecting switch base (8) and an input of the ground switch. The handle (9) used at the time of the turning operation was combined.

Therefore, according to the switch operating mechanism, the screw for fixing the disconnecting switch base (8) in the switching operating mechanism and the handle (9) for rotating the disconnect switch switch (8) when operating the ground switch. Since the combination of (1) and (2) is shared, the work of mounting the disconnecting switch stand (8) at the end of the on / off operation of the grounding switch can be facilitated, and malfunction can be prevented.

[0023]

According to the present invention, it is possible to provide a switch operating mechanism for reducing the size and weight of the entire switchgear of the three-position rotary type.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a switch operating mechanism according to an embodiment of the present invention.

FIG. 2 is a front view showing the switch operating mechanism according to the embodiment of the present invention.

FIG. 3 is a front view showing the switch operating mechanism according to the embodiment of the present invention;

FIG. 4 is a perspective view showing a configuration of a DS operation mechanism according to a conventional example.

FIG. 5 is a perspective view showing a configuration of an ES operation mechanism according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Motor 2 ... Worm 3 ... Worm wheel 4 ... Energy storage lever 5 ... Energy storage spring 6 ... Output shaft 7a ... Damper 7b ... Damper 8 ... DS operation mechanism base 9 ... Handle 10a ... ES cut side stopper pin 10b ... ES entry side stopper pin 11 ... DS / ES common base (base) 12 ... DS operation mechanism 13 ... Ratchet 14 ... Ratchet wheel 15 ... Ratchet side lever 16 ... Ratchet side link rod 17 ... Shaft side lever 18 ... Power storage side cam 19 ... Output shaft 20 ... Spring side cam 21 ... Output side cam 22 ... Output side lever 23 ... Spring side link rod 24 ... Spring side lever 25 ... Spring shaft 26 ... Energy storage spring 27 ... Output shaft side cam 28 ... Damper lever 29a … Damper 29b… damper 30… ES operation mechanism 31… manual operation Use the handle 32 ... ES output shaft 33 ... positioning lever 34 ... base 35a ... positioning stopper 35b ... positioning stopper

Claims (3)

[Claims] An operating mechanism for a switch used in a three-position contact rotary switch, wherein an operating mechanism for a disconnecting switch and an operating mechanism for a grounding switch are shared. 2. The switch operating mechanism according to claim 1, further comprising a spring energy storage mechanism, wherein the spring energy storage mechanism is disposed on a common base of the disconnecting switch and the grounding switch. 3. The switch operating mechanism according to claim 1, wherein a screw for fixing the disconnecting switch base and a handle used for an on / off operation of the ground switch are combined. .