JP2561131Y2 - Operating device for switchgear - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operating device for a switching device in which a disconnecting switch and a grounding switch are combined, and a series of three opening / closing operations of disconnecting switch ON / OFF and grounding switch ON are performed by one unit. .

[0002]

2. Description of the Related Art Conventionally, there are three types of disconnecting switch ON / OFF and grounding switch ON.
An apparatus that performs a series of opening and closing operations of the state by one unit has a configuration shown in FIG. In FIG. 1, reference numeral 1 denotes an apparatus main body, which is a connecting rod 4 connecting the front plate 2, the rear plate 3 and the two plates 2, 3.
Consists of Reference numeral 5 denotes an upper operating shaft for a disconnector having a left-hand screw 6 rotatably supported on an upper portion of the main body 1, and a lower operating shaft 7 for a ground switch having a right-hand screw 8 rotatably supported at a lower portion of the main body 1. The operating shafts 9 and 10 are connected to the ends of the operating shafts 5 and 7 to rotate the operating shafts 5 and 7, respectively.
Numerals 11 and 12 denote a rectangular parallelepiped upper nut and a lower nut screwed to both operation shafts 5 and 7, and 13 denotes a main lever having both ends connected to the nuts 11 and 12, and an upper end having an upper pin 14 of the upper nut 11. The lower end is loosely supported by the lower pin 15 of the lower nut 12.

[0003] Reference numeral 16 denotes a connecting device, the base of which is the main lever 1.
3 is connected to the center pin 17 and the position of the distal end portion 18 due to a change in the position of the center pin 17 determines the disconnection state A,
The state changes to the off state B and the on / off state C. FIG.
Indicates a state A in which the disconnector is turned on. When the upper operation shaft 5 is rotated counterclockwise by the upper motor 9 from this state, the upper operation shaft 5
The upper nut 11 is rotated counterclockwise when viewed from the X direction.
Moves to the right, the main lever 13 rotates clockwise around the lower pin 15, the upper pin 14 moves to the final upper position 19, the center pin 17 moves to the cutting position 20, and the coupling device 16 Is moved to the off state B by the movement of the distal end portion 18.

Next, when the lower operation shaft 7 is rotated clockwise by the lower motor 10 from the cutting state B when viewed from the X direction, the lower nut 12 is moved rightward by the clockwise rotation of the lower operation shaft 7. The main lever 13 rotates counterclockwise around the upper position 19, the lower pin 15 moves to the final lower position 21, the center pin 17 moves to the ground switch opening position 22, By the movement of the unit 18, the state C becomes the state C in which the grounding switch is turned on.

When the lower operation shaft 7 is rotated counterclockwise by the lower motor 10 from the state C, the lower nut 12 moves to the left, and the main lever 13 moves to the center of the upper position 19, contrary to the above. , The lower pin 15 moves to the position shown in FIG. 13, and the center pin 17
It moves to 0, and becomes the off state B. Further, when the upper operation shaft 5 is rotated clockwise by the upper motor 9 from the state B, the upper nut 11 moves to the left, and the main lever 13 is moved in FIG.
3 rotates counterclockwise around the lower pin 15 and the upper pin 14 moves to the position shown in FIG.
Moves to the position shown in FIG. 13 and enters the disconnection switch-on state A of FIG.

[0006]

In the case of the above-mentioned conventional operating device, the opening and closing speed depends on the rotational speed of each of the operating shafts 5 and 7, that is, the moving speed of the nuts 11 and 12, so that the opening and closing speed is about several centimeters per second. It is. Therefore, for example, when a disconnector is installed on the primary side of a transformer and used for switching the exciting current of the transformer, the current switching capability may be insufficient. In order for both the disconnecting switch and the earthing switch to have a sufficient current switching capability, a high-speed operation of several meters per second is required, and there is a problem that the required high-speed operation cannot be obtained with the conventional device. An object of the present invention is to provide an inexpensive switchgear operating device that can achieve a high-speed opening / closing operation, has a simple configuration, and is inexpensive.

[0007]

In order to solve the above-mentioned problems, the present invention combines a disconnecting switch and a grounding switch to form a series of three-state opening / closing operations of disconnecting switch ON, OFF, and grounding switch ON. 1
In the switchgear operating device, the upper operating shaft for the disconnector and the lower operating shaft for the grounding switch, which are provided in parallel, are screwed to the two operating shafts and are moved by rotation of the two operating shafts. An upper nut and a lower nut, a main shaft, a main hoist lever rotatably provided on the main shaft and rotated by movement of the upper nut, and a main hoist clutch for transmitting rotation of the main hoist lever to the main shaft. A main spring lever fixed to the main shaft, and provided between a tip and a base of the main spring lever, compressed by rotation of the main spring lever, and passed through a dead center of the tip of the main spring lever. Sometimes, the main hoisting clutch is disengaged and extended to rotate the main shaft at a high speed via the main spring lever, a main drive lever rotatably provided on the main shaft, and a high speed rotation of the main shaft. Main transmitting to drive lever And dynamic clutch, a main lever provided between the lower nut and the tip end portion of the main drive lever,
A coupling device coupled to a central portion of the main lever to perform the opening and closing operations in the three states according to the position of the central portion.

The present invention also provides an upper operating shaft for a disconnector and a lower operating shaft for a grounding switch, which are provided in parallel, an upper nut which is screwed to the both operating shafts and is moved by rotation of the two operating shafts. A lower nut, a main shaft, and a main hoisting lever rotatably provided on the main shaft and rotated by movement of the upper nut;
A main hoist clutch for transmitting the rotation of the main hoist lever to the main shaft, a main spring lever fixed to the main shaft, a sub shaft, and a rotatable shaft rotatably provided on the sub shaft, which is rotated by movement of the lower nut; A sub-winding lever, a sub-winding clutch that transmits rotation of the sub-winding lever to the sub-shaft, a sub-spring lever fixed to the sub-shaft, a tip end of the main spring lever, and the sub-spring. The main and sub hoist clutches are disengaged and extended when the leading ends of the main and sub spring levers pass through the dead center, and are compressed by the rotation of the main and sub spring levers . before SL main, a spring for high-speed rotation of the auxiliary shaft, wherein
A main drive lever rotatably provided on the main shaft;
A prime mover that transmits the high-speed rotation of the spring lever to the main drive lever
A dynamic clutch, a sub-drive lever rotatably provided on the sub-shaft, a sub-drive clutch for transmitting high-speed rotation of the sub-shaft to the sub-drive lever, and a tip end of the main drive lever and a sub-drive lever. A main lever provided between the main lever and a connecting device that is connected to a central portion of the main lever and that opens and closes the three states according to the position of the central portion.

[0009]

In the operation device for the opening / closing device of the present invention configured as described above, the lifting lever rotatable on the main shaft is rotated by the movement of the nut due to the rotation of the operation shaft, and the rotation is transmitted to the main shaft via the clutch. The transmitted rotation of the main shaft compresses the spring via the spring lever, and the spring rapidly extends by passing through the dead center of the spring lever to rapidly rotate the main shaft, and the rapid rotation of the main shaft is transmitted to the main lever via the drive lever. And the connecting device connected to the center of the main lever opens and closes quickly,
The required high-speed opening / closing operation is performed.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment will be described with reference to FIGS. In these figures, the same reference numerals as those in FIG. 13 indicate the same or corresponding elements. 1 to 6 showing the first embodiment, reference numeral 23 denotes a main shaft provided above the operation shafts 5 and 7 in a direction orthogonal to the operation shafts 5 and 7, and reference numeral 24 denotes a main shaft 23. A rotatable main hoisting lever, in which a groove 25 at the tip is linked to a roller 26 of the upper nut 11 of the upper operating shaft 5,
Rotated by the movement of. Reference numeral 27 denotes a main hoisting clutch for transmitting the rotation of the main hoisting lever 24 to the main shaft 23, and is constituted by engaging and disengaging a projection 28 of the main hoisting lever 24 and a projection 29 of the main shaft 23.

Reference numeral 30 denotes a main spring lever fixed to the main shaft 23, 31 denotes a pin fixed to the tip of the main spring lever 30, and 32 denotes a rod-shaped upper spring guide whose upper end is rotatably supported by the pin 31. Reference numeral 33 denotes a fixed pin provided on the base portion, and reference numeral 34 denotes a cylindrical lower spring guide whose lower end is pivotally supported by the fixed pin 33, and the upper spring guide 32 is movably fitted therein. Reference numeral 35 denotes a spring fitted on both spring guides 32 and 34. 36 is a main drive lever rotatably provided on the main shaft 23, and 37 is a main drive clutch for transmitting the rotation of the main shaft 23 to the main drive lever 36. The protrusion 38 of the main shaft 23 and the protrusion 39 of the main drive lever 36 are provided. It is constituted by engagement and disengagement. Reference numeral 40 denotes a pin at the tip of the main drive lever 36, and the upper end of the main lever 13 is pivotally supported.

Next, the operation of the first embodiment will be described. FIGS. 1 to 5 show a state in which the disconnector is turned on. When the upper operation shaft 5 is rotated counterclockwise as viewed from the X direction in FIG. 1 by rotation of the upper motor 9 for the disconnector, the upper nut 11 in FIG. Moving to the right, the main hoisting lever 24 rotates counterclockwise, the main shaft 23 rotates counterclockwise via the main hoisting clutch 27, and the main spring lever 30 also rotates counterclockwise. As shown in FIGS. 1 and 3, the rotation of the main spring lever 30 compresses the spring 35, and when the pin 31 reaches the bottom dead center and further passes through the bottom dead center, the main winding is repelled by the spring 35. After leaving the upper clutch 27, the main shaft 23 rotates counterclockwise at a high speed, the main drive lever 36 rotates counterclockwise at a high speed via the main drive clutch 37, the main lever 13 rotates clockwise at a high speed, and the pin 40 rotates. Moves to the final upper position 19, the center pin 17 moves to the cutting position 20, and the connecting device 16 moves at a high speed, and operates at a high speed from the disconnecting state to the disconnecting state. When the main drive lever 36 rotates at high speed,
Stop at a predetermined position by a stopper (not shown). Next, the operation from the OFF state to the ON state of the grounding switch, and the operation from the ON state to the OFF state are the same as those in the case of FIG. 13 described above. Then, from the off state to the disconnection state, the upper motor 9 is operated at a high speed by the reverse rotation of the upper motor 9 by the reverse operation.

(Embodiment 2) In FIGS. 7 to 12 showing Embodiment 2, FIG.
Are different from the following points.
Reference numeral 41 denotes a sub shaft provided below the lower operation shaft 7 in parallel with the main shaft 23, reference numeral 42 denotes a sub winding lever rotatably provided on the sub shaft 41, and a groove 43 at a distal end portion of the sub winding lever 43 of the lower operation shaft 7. The lower nut 12 is linked to the roller 44 and is rotated by the movement of the lower nut 12. Reference numeral 45 denotes the rotation of the sub winding lever 42 for the sub shaft 4
1 is a sub-winding clutch that transmits power to the
And the projection 47 of the counter shaft 41 are engaged and disengaged.

Reference numeral 48 denotes a sub-spring lever fixed to the sub-shaft 41, reference numeral 49 denotes a pin fixed to the tip end of the sub-spring lever 48, which is a substitute for the fixing pin 33. It is pivotally supported by a pin 49. Reference numeral 50 denotes a sub-drive lever rotatably provided on the sub-shaft 41, and reference numeral 51 denotes a sub-drive clutch for transmitting the rotation of the sub-shaft 41 to the sub-drive lever 50. It is constituted by engagement and disengagement with the projection 53. Reference numeral 54 denotes a pin at the distal end of the auxiliary drive lever 50, which is a substitute for the lower pin 15 of the lower nut 12, and the lower end of the main lever 13 is pivotally supported.

Next, the operation of the second embodiment will be described. 7 to 11 show the disconnection switch-on state. The operation from the disconnection switch-on state to the disconnection state and the operation from the disconnection state to the disconnection switch-on state are the same as those in the first embodiment, and are different. The operation is an operation from the OFF state to the ON state of the grounding switch, and an operation from the ON state to the OFF state. That is,
In the off state, when the lower operation shaft 7 is rotated clockwise as viewed from the X direction in FIG. 7 by the rotation of the lower motor 10 for the grounding switch, the lower nut 12 in FIG. The lever 42 rotates clockwise, the auxiliary shaft 41 rotates clockwise via the auxiliary hoisting clutch 45, and the auxiliary spring lever 48 also rotates clockwise.

As shown in FIGS. 7 and 9, the rotation of the auxiliary spring lever 48 compresses the spring 35, and the pin 49 reaches the top dead center. As a result, the sub shaft 41 rotates at high speed in the clockwise direction after leaving the sub hoisting clutch 45, the sub drive lever 50 rotates at high speed in the clockwise direction via the sub drive clutch 51, and the main lever 13 rotates at high speed in the counterclockwise direction. , The pin 54 is in the final lower position 21
, The center pin 17 moves to the ground switch on position 22, and the connecting device 16 moves at high speed, and operates at a high speed from the off state to the ground switch on state. The sub-drive lever 51 is stopped at a predetermined position by a stopper (not shown) during high-speed rotation. Next, from the state where the grounding switch is turned on to the state where the grounding switch is turned off, the lower motor 10 rotates at a high speed by the reverse rotation of the above operation.

[0017]

[Effects of the Invention] Since the present invention is configured as described above, the following effects can be obtained. The rotation of the nut by the rotation of the operating shaft for the disconnector or the earthing switch rotates the hoisting lever rotatable on the main shaft or the sub shaft, and the rotation is transmitted to the main shaft or the sub shaft via the clutch, and the main shaft or the sub shaft is rotated. Rotation of the spring compresses the spring via the spring lever, and the spring expands rapidly by passing the dead center of the spring lever to rapidly rotate the main shaft or the sub shaft, and the rapid rotation of the main shaft or the sub shaft is performed via the drive lever. A connecting device transmitted to the main lever and connected to the central portion of the main lever rapidly opens and closes, and can perform a required high-speed opening and closing operation, and is simple and inexpensive in configuration.

[Brief description of the drawings]

FIG. 1 is a cutaway front view of a first embodiment of the present invention.

FIG. 2 is a cutaway right side view of FIG.

FIG. 3 is a diagram illustrating an operation of a part of FIG. 1;

FIG. 4 is an operation explanatory view of another part of FIG. 1;

FIG. 5 is a perspective view of a part of FIG. 1;

FIG. 6 is an exploded perspective view of a part of FIG. 1;

FIG. 7 is a cutaway front view of Embodiment 2 of the present invention.

8 is a cut right side view of FIG. 7;

FIG. 9 is a diagram illustrating an operation of a part of FIG. 7;

FIGS. 10 (a) and 10 (b) are diagrams for explaining the operation of another part of FIG. 7;

FIG. 11 is a perspective view of a part of FIG. 7;

FIG. 12 is an exploded perspective view of a part of FIG. 7;

FIG. 13 is a cut front view of a conventional example.

[Explanation of symbols]

 5 Upper operating shaft 7 Lower operating shaft 11 Upper nut 12 Lower nut 13 Main lever 16 Connecting device 23 Main shaft 24 Main hoisting lever 27 Main hoisting clutch 30 Main spring lever 35 Spring 36 Main drive lever 37 Main drive clutch 41 Secondary shaft 42 Secondary winding lever 45 Secondary winding clutch 48 Secondary spring lever 50 Secondary driving lever 51 Secondary driving clutch

Claims (2)

(57) [Scope of request for utility model registration] 1. A disconnecting switch and a grounding switch are combined, and a series of three-state opening / closing operations of disconnecting switch on, off, and grounding switch are performed by one.
An operating device for a switchgear which is operated by a table, wherein an upper operating shaft for a disconnector and a lower operating shaft for a grounding switch provided in parallel are screwed to the two operating shafts and moved by rotation of the two operating shafts. An upper nut and a lower nut, a main shaft, a main hoist lever rotatably provided on the main shaft and rotated by movement of the upper nut, and a main hoist clutch for transmitting rotation of the main hoist lever to the main shaft. A main spring lever fixed to the main shaft, and provided between a tip end and a base of the main spring lever, and compressed by rotation of the main spring lever;
A spring that disengages and extends the main hoisting clutch when the leading end of the main spring lever passes through the dead center, and that rotates the main shaft at a high speed via the main spring lever; and a main drive rotatably provided on the main shaft. A lever, a main drive clutch for transmitting the high-speed rotation of the main shaft to the main drive lever, a main lever provided between a distal end portion of the main drive lever and the lower nut, and a central portion of the main lever. An operating device for an opening / closing device comprising: a connecting device connected to perform the opening / closing operation in the three states according to the position of the central portion. 2. A combination of a disconnector and a grounding switch, and a series of three-state opening / closing operation of disconnecting switch on / off, grounding switch / on is performed by one.
An operating device for a switchgear which is operated by a table, wherein an upper operating shaft for a disconnector and a lower operating shaft for a grounding switch provided in parallel are screwed to the two operating shafts and moved by rotation of the two operating shafts. An upper nut and a lower nut, a main shaft, a main hoist lever rotatably provided on the main shaft and rotated by movement of the upper nut, and a main hoist clutch for transmitting rotation of the main hoist lever to the main shaft. A main spring lever fixed to the main shaft; a sub shaft; a sub hoist lever rotatably provided on the sub shaft and rotated by movement of the lower nut; A sub hoist clutch for transmitting to a shaft, a sub spring lever fixed to the sub shaft, and a front end of the main spring lever and a front end of the sub spring lever; Compressed by the rotation of the The main during dead passage of the distal end portion of the over, clutch is extended out on Fukumaki, before Symbol main, a spring for high-speed rotation of the counter shaft, a main drive lever provided rotatably on the main shaft,
High speed rotation of the main spring lever is transmitted to the main drive lever
A main drive clutch, a sub-drive lever rotatably provided on the sub-shaft, a sub-drive clutch for transmitting high-speed rotation of the sub-shaft to the sub-drive lever, a tip end of the main drive lever and the sub-drive An operating device for an opening / closing device, comprising: a main lever provided between the driving lever and a tip end thereof; and a connecting device connected to a central portion of the main lever and performing the opening / closing operation in the three states according to the position of the central portion. .