KR102018872B1 - Earth switch driving mechanism of load break switch - Google Patents

Abstract

The present invention is structurally simple and can be applied to the ground driving of a small gas insulated switchgear, and the ground drive of the gas insulated switchgear can be stably maintained by preventing the lever from rotating in the open direction by external force in the put state. It's about the mechanism.
Ground driving mechanism of the gas insulated switchgear according to the present invention,
A spring rod provided at an upper portion of the base frame and connected to an operation lever and rotating according to the rotation of the operation lever;
A spring assembly provided below the spring rod in the base frame so as to be connected to the spring rod and vertically moving according to the rotation of the spring rod; And
It is provided to rotate in accordance with the vertical movement of the spring assembly in the base frame, characterized in that consisting of a shaft assembly to which the ground bar is connected.

Description

Earth switch driving mechanism of load break switch

The present invention relates to a ground driving mechanism of a gas insulated switchgear, and more particularly, it is structurally simple and can be applied to ground driving of a small gas insulated switchgear, and prevents the lever from rotating in the open direction by an external force in a closed state. The present invention relates to a ground driving mechanism of a gas insulated switchgear capable of maintaining a stable input state.

Gas-insulated switchgear refers to a device that cuts off the current in case of an accident such as opening / closing a load, ground fault or short circuit in transmission, substation system or electric circuit.

Such a gas insulated switchgear is composed of a blocking part, an opening part and a ground part in a tank-type metal container filled with an SF6 insulating gas, which is a tasteless, odorless and nontoxic inert insulating gas having excellent insulating properties.

Such a gas insulated switchgear can be opened and closed by a manual or electric control device in a normal use state, and protects the current system and the load by automatically cutting off the current during overload and short circuit.

In addition, the gas insulated switchgear functions as line branch, line division and load protection on the distribution line, and is installed in overcrowded areas, subways, ports, ships in urban areas, and plays an important role in providing uninterrupted power to customers. Do it.

On the other hand, the ground driving mechanism of the gas insulated switchgear should be able to ground the main circuit for safety during inspection and replacement of parts inside the equipment, and the operation state of the gas insulated switchboard should be clearly understood.

Conventionally, a circuit breaker mechanism such as VCB, ACB, etc. is used as a ground input opening mechanism, or a method of charging and driving energy of a compression spring is used.

However, there is a disadvantage that the structure of the existing VCB, ACB, etc. to the ground drive mechanism is complicated and expensive, and the method of charging and driving the energy of the compression spring must be as large as the length of the spring. Therefore, there is a problem in that the overall size of the driving mechanism becomes large and the cost increases.

In addition, when installed inside a gas insulated switchgear manufactured in a small size, the height of the mechanism is limited, so space constraints apply to the conventional mechanism.

The present invention was devised to solve the problems of the prior art as described above, and is structurally simple and can be applied to ground driving of a small gas insulated switchgear, and prevents the lever from rotating in the opening direction by an external force in a closed state. It is an object of the present invention to provide a ground driving mechanism of a gas insulated switchgear capable of stably maintaining an input state.

Ground driving mechanism of the gas insulated switchgear according to the present invention,

A spring rod provided at an upper portion of the base frame and connected to an operation lever and rotating according to the rotation of the operation lever;

A spring assembly provided below the spring rod in the base frame so as to be connected to the spring rod and vertically moving according to the rotation of the spring rod; And

It is provided to rotate in accordance with the vertical movement of the spring assembly in the base frame, characterized in that consisting of a shaft assembly to which the ground bar is connected.

At this time, the spring assembly is installed to penetrate up and down in the spring case, the spring shaft is connected to the top of the spring rod; And it may be configured to include a spring provided to surround the spring shaft in the spring case.

In addition, the spring assembly is installed in the spring case, and includes a movement limiting means for limiting the vertical movement of the spring, the movement limiting means, is installed in the upper and lower in the spring case, respectively, the upper center hole and It may be configured to include an upper fixing plate and a lower fixing plate formed with a lower center hole, and an upper ring and a lower ring installed on the spring shaft, and installed on the upper and lower portions of the spring.

In addition, the movement limiting means further comprises an upper support plate and a lower support plate installed on the upper and lower portions of the spring, the upper ring is installed on the upper support plate, the lower ring is installed on the lower portion of the lower support plate It may be configured to.

On the other hand, the shaft assembly is connected to the spring case, the driving plate to rotate in accordance with the up and down movement of the spring case, connected to the drive plate, rotates in accordance with the rotation of the drive plate, the shaft is outside the base frame Extending to, may be composed of a driven plate to which the ground bar is coupled.

In this case, the driving plate is installed so as to face each other in the spring case in the same direction as the spring rod, consisting of a first and a second driving plate installed on the driving side and the ground side, respectively, Extending out of the base frame, it may be configured to provide an indicator bar connecting shaft to which the indicator bar is connected.

In addition, the driven plate may be configured to be connected by the driving plate and the plate connecting shaft and installed in parallel with the second driving plate.

In addition, an interlock lever may be installed on the spring rod so as to be positioned above the vertical line of the second driving plate, and the second driving plate may be formed with an interlock groove that engages with the interlock lever.

On the other hand, the ground drive mechanism of the gas insulated switchgear according to the present invention may further comprise a holding means for suppressing the operation of the shaft assembly to operate the shaft assembly in a state in which the spring assembly is fully operated.

As an example, the apparatus may further include a drive holding means positioned below the driving plate, the driving frame being geared with the driving plate, and a driving spring installed in the base frame and connected to one side of the driving frame. Can be.

In this case, a driving gear protrusion is formed in the drive frame, and a driving gear groove that is engaged with the driving gear protrusion is formed in the driving plate.

As another example, the driving plate may further include a driven frame positioned at a lower portion of the driven plate, the driven frame being geared with the driven plate, and a driven spring installed in the base frame and connected to one side of the driven frame. Can be.

At this time, a driven gear protrusion is formed in the driven frame, and a driven gear groove is formed in the driven plate to be engaged with the driven gear protrusion.

Such a ground driving mechanism of the gas insulated switchgear according to the present invention is simple in structure, and can be applied to the ground drive of the small gas insulated switchgear.

In addition, the ground drive mechanism of the gas insulated switchgear according to the present invention prevents the lever from rotating in the opening direction by an external force in the closing state, thereby keeping the closing state stable.

1 is a perspective view illustrating a ground driving mechanism of a gas insulated switchgear according to an exemplary embodiment of the present invention.
FIG. 2 is a front side perspective view illustrating an internal structure of the ground driving mechanism of the gas insulated switchgear of FIG. 1.
3 is a rear side perspective view illustrating an internal structure of the ground driving mechanism of the gas insulated switchgear of FIG. 1.
4 is a view showing in detail the connection structure of the spring assembly of FIG.
5 is an internal configuration view seen from the ground side of FIG.
FIG. 6 is a diagram illustrating an internal configuration of the driven plate and the driven hold means in FIG. 5.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or convention. Therefore, definitions of these terms should be made based on the contents throughout the specification.

1 is a perspective view illustrating a ground driving mechanism of a gas insulated switchgear according to an exemplary embodiment of the present invention, FIG. 2 is a front side perspective view illustrating an internal structure of the ground driving mechanism of the gas insulated switchgear of FIG. 1, and FIG. 4 is a rear side perspective view showing the internal structure of the ground drive mechanism of the gas insulated switchgear of FIG. 1, FIG. 4 is a detailed view of the connection structure of the spring assembly of FIG. 1, and FIG. FIG. 6 is a diagram illustrating an internal configuration of the driven plate and the driven hold means in FIG. 5.

1 to 6, the ground driving mechanism of the gas insulated switchgear according to the embodiment of the present invention includes a spring rod 100, a spring assembly 200, and a shaft assembly 300.

On the other hand, the spring rod 100, the spring assembly 200 and the shaft assembly 300 is mounted to the base frame 10, the operation lever 20 is provided on one side of the base frame 10, On the other side, the ground bar 30 is provided.

Hereinafter, one side of the base frame 10 in which the operation lever 20 is provided is a 'drive side', and the other side of the base frame 10 in which the ground bar 30 is provided is a 'ground side'. Can be named.

In addition, the operation lever 20 is connected to the spring rod 100, and the ground bar 30 is connected to the shaft assembly 300.

In the ground driving mechanism of the gas insulated switchgear according to the embodiment of the present invention having the configuration as described above, the spring rod 100 rotates in accordance with the rotation of the operation lever 20, and is disposed below the spring rod 100. The connected spring assembly 200 moves up and down according to the rotation of the spring rod 100, and the shaft assembly 300 connected to the spring assembly 200 rotates according to the up and down movement of the spring assembly 200. The ground bar 30 mounted to the shaft assembly 300 is configured to rotate with the rotation of the shaft assembly 300 so that the ground on / off state is achieved.

First, the spring rod 100 is provided above the base frame 10, and the spring rod 100 extends outside the base frame 10 to be coupled to the operation lever 20. The shaft 110 is provided.

At this time, the spring rod 100 is formed in a disc shape, the rod shaft 110 is provided on the spring rod 100 in an eccentric state off the center of the spring rod 100.

A spring assembly 200 is provided below the spring rod 100 in the base frame 10, and the spring assembly 200 is configured to vertically move according to the rotation of the spring rod 100.

In this case, the spring assembly 200 is a spring shaft 220 which is installed to penetrate up and down the spring case 210 and the main spring 230 provided to surround the spring shaft 220 in the spring case 210. In this case, an upper end of the spring shaft 220 is connected to the spring rod 100.

In addition, the spring assembly 200 is installed in the spring case 210, and includes a movement limiting means 240 for limiting the vertical movement of the main spring 230.

Thus, the main spring 230 is limited to move up and down in the spring case 210 by the movement limiting means 240, the spring case 210 as the spring shaft 220 moves up and down Compression and inflation).

On the other hand, the upper support plate 231 and the lower support plate 232 are further installed on the upper and lower portions of the main spring 230, respectively, so that the main spring 230 can be made stable.

In this case, the upper support plate 231 and the lower support plate 232 may be attached to the main spring 30, it may be in an unattached state.

The movement limiting unit 240 is installed at the upper and lower portions of the spring case 210, respectively, and upper and lower fixing plates 241 and 242 having upper and lower center holes 241a and 242a, respectively, and the spring shaft ( It is installed on the 220, it may be composed of upper and lower rings (243, 244) installed on the upper and lower portions of the main spring 230.

In this case, the upper and lower rings 243 and 244 are configured to pass through the upper and lower center holes 241a and 242a formed in the upper and lower fixing plates 241 and 242, respectively.

In addition, the upper and lower rings 243 and 244 may be formed to have a width sufficient to sufficiently support the main spring 230.

Therefore, when the spring shaft 220 is moved upward while the spring case 210 is fixed, the upper ring 243 passes through the upper center hole 241a, but the main spring 230 is the upper fixing plate ( The movement to the top is limited by 241, while the lower ring 244 also moves up with the movement of the spring shaft 220, such that the spring 230 is the upper fixing plate 241 and the lower ring 244. Compressed in between.

Thereafter, when the spring case 210 moves upward, the main spring 230 expands by the distance that the spring case 210 moves upward.

On the contrary, when the spring shaft 220 moves downward while the spring case 210 is fixed, the lower ring 244 passes through the lower center hole 242a, but the main spring 230 has a lower fixing plate. While the movement to the lower side is limited by 242, the upper ring 243 is also moved downward together with the movement of the spring shaft 220, so that the main spring 230 is connected to the lower fixing plate 242 and the upper ring. Between 243.

Thereafter, when the spring case 210 moves downward, the main spring 230 expands by the distance that the spring case 210 moves downward.

On the other hand, when the upper support plate 231 and the lower support plate 232 is installed, the upper support plate 231 is fixed by the upper fixing plate 241, the lower support plate 232 is fixed by the lower fixing plate 242, The movement of the main spring 230 is to be limited.

In this case, the upper ring 243 is located above the upper support plate 231, and the lower ring 244 is located below the lower support plate 232.

On the other hand, the shaft assembly 300 is connected to the spring assembly 200, the shaft assembly 300 is configured to rotate in accordance with the vertical movement of the spring assembly 200.

Specifically, the shaft assembly 300 is connected to the spring assembly 200, in particular the spring case 210 of the spring assembly 200, the drive to rotate in accordance with the vertical movement of the spring assembly 200 The plate 310 is connected to the driving plate 310, and rotates according to the rotation of the driving plate 310, and includes a driven plate 320 to which the ground bar 30 is connected.

In this case, the driven plate 320 is provided with a shaft 330 extending outside the base frame 10 so that the ground bar 30 can be coupled.

On the other hand, the driving plate 310 is a disk-shaped, it may be composed of the first and second driving plates (311, 312) installed to face each other on the spring case 210, the same as the spring rod 100 It may be installed in the spring case 210 in the direction.

In this case, the first driving plate 311 is installed on the driving side, and the second driving plate 312 will be described with an example of being installed on the ground side.

On the other hand, according to an embodiment of the present invention, the first driving plate 311 is provided with an instruction bar connecting shaft 340 extending outside the base frame 10 and to which the instruction bar 40 is connected.

Therefore, by checking the position of the indication bar 40, it is possible to easily identify whether the current state is a ground state or an open state.

In addition, the driven plate 320 may be connected by the driving plate 310 and the plate connecting shaft 350, and may be installed in parallel with the second driving plate 312.

Meanwhile, an interlock lever 400 is installed on the spring rod 100 so as to be positioned above the vertical line of the second driving plate 312, and the second driving plate 312 is fitted with the interlock lever 400. A physics interlock groove 313 may be formed.

Therefore, when the ground operation is performed, the interlock lever 400 rotates according to the rotation of the spring rod 100, and the interlock groove 313 moves according to the rotation of the second driving plate 312. By interlocking the interlock lever 400 with the interlock groove 313, the second driving plate 312 may be prevented from rotating in the reverse direction, and thus grounding may be stably performed.

Looking at the operation of the ground drive mechanism of the gas insulated switchgear having the above configuration, when the operator rotates the operation lever 20 counterclockwise to ground, the spring rod 100 with the rotation of the operation lever 20 Rotates about the rod shaft 110 upward.

When the spring rod 100 rotates up, the spring assembly 200 connected to the bottom of the spring rod 100 is moved up.

At this time, as the spring assembly 200 moves upward, the shaft assembly 300 connected to the spring assembly 200 is rotated in a counterclockwise direction and finally connected to the shaft 330 constituting the shaft assembly 300. Grounding bar 30 is rotated in the counterclockwise direction is made to ground.

In the open state, when the operator rotates the operation lever 20 in the clockwise direction, the spring rod 100 rotates down about the rod shaft 110 together with the rotation of the operation lever 20.

When the spring rod 100 rotates downward, the spring assembly 200 connected to the bottom of the spring rod 100 is moved downward.

At this time, as the spring assembly 200 moves downward, the shaft assembly 300 connected to the spring assembly 200 is rotated in a clockwise direction, and finally connected to the shaft 330 constituting the shaft assembly 300. The ground bar 30 rotates in a clockwise direction to achieve an open state.

In this case, it will be readily understood by those skilled in the art from the embodiment of the present invention that the ground and the open state according to the rotation direction may be made in the opposite manner to the present embodiment.

On the other hand, according to the present invention, the ground bar 30 is rotated in a state in which the main spring 230 is completely compressed, and then the ground bar 30 is rotated in the reverse direction by an external force not by the intention of the operator. The holding means 500 may be further included so as not to.

That is, the holding means 500 suppresses the operation of the shaft assembly such that the shaft assembly is operated to be in a ground state or an open state while the spring assembly is fully operated.

Specifically, the holding means 500 is driven and driven holding means 510 and the holding means for holding the drive plate 310 and the driven plate 320 to rotate in a state in which the main spring 230 is fully compressed Means 520.

The driving holding means 510 is disposed in the lower portion of the driving plate 310, and is installed in the driving frame 511 and the base frame 10 which are meshed with the driving plate 310, and the driving frame ( The driving spring 512 is connected to one side of the 511.

In this case, a driving gear protrusion 511a is formed in the driving frame 511, and a plurality of driving gear grooves 511b are formed in the driving plate 310 at predetermined intervals.

In addition, the driven holding means 520 is disposed in the driven frame 521 and the base frame 10 which is located under the driven plate 320 and is engaged with the driven plate 320, and is driven by the driven frame. It consists of a driven spring 522 connected to one side of the (521).

At this time, a driven gear protrusion 521a is formed in the driven frame 521, and a plurality of driven gear grooves 521b are formed in the driven plate 320 at predetermined intervals.

On the other hand, the drive holding means 510 may be driven in any connection with any one of the first and second drive plate (311, 312) drive plate, in the present embodiment the drive holding means 510 is An example of driving in connection with the first driving plate 311 will be described.

In addition, the drive frame 511 and the driven frame 521 is formed in a structure that flows up and down by pressing the upper portion, in particular, the portion of the drive frame 511 connected to the drive spring 512 and A portion of the driven frame 521 that is connected to the driven spring 522 is preferably formed in a streamline shape having a curved surface upward.

Referring to the operation of the holding means 500, when the operator rotates the operation lever 20 counterclockwise to ground, the spring rod 100 with the rotation of the operation lever 20, the rod shaft 110 It will rotate up to the center.

Then, when the spring rod 100 rotates up, the spring assembly 200 connected to the bottom of the spring rod 100 is moved up.

In this case, when the driving plate 310 rotates as the spring assembly 200 moves upward, the area between the driving gear grooves 511b formed in the driving plate 310 is formed in the driving frame 511. 511a is pressed, and as the portion connected to the driving spring 512 of the driving frame 511 moves downward, the driving spring 512 expands to block the movement of the driving frame 511.

In addition, as the driving plate 310 rotates, the driven plate 320 also rotates, and the area between the driven gear grooves 521b formed in the driven plate 320 is the driven gear protrusion 521a formed in the driven frame 521. As a result, as the portion connected to the driven spring 522 of the driven frame 521 moves downward, the driven spring 522 expands to block the movement of the driven frame 521.

As such, the rotation of the driving plate 310 and the driven plate 320 is constantly suppressed by the force caused by the expansion of the driving spring 512 and the driven spring 522.

However, when the spring 230 of the spring assembly 200 is fully charged and becomes stronger than the force of the driving spring 512 and the driven spring 522, the driving plate 310 and the rotating plate ( 320 is rotated to engage the next drive gear groove 511b and driven gear groove 521b.

Therefore, in the state in which the main spring 230 is completely compressed, the driving plate 310 and the driven plate 320 are rotated so that the external spring does not rotate in the reverse direction even if an external force is not intended by the operator. .

Thereafter, as the driven plate 320 rotates, the ground bar 30 connected to the shaft 330 of the driven plate 320 rotates to make the ground.

In the above, the operation of the holding means 500 in the case of grounding has been described, but in the opposite case, that is, in the case of opening the ground, only the direction of rotation is different and the movement is the same. .

Meanwhile, although the ground driving mechanism of the gas insulated switchgear according to the present invention has been described in accordance with a limited embodiment, the scope of the present invention is not limited to the specific embodiment, which is obvious to those skilled in the art. Various alternatives, modifications and changes can be made within the scope.

Accordingly, the embodiments and the accompanying drawings described in the present invention are not intended to limit the technical spirit of the present invention, but are for explaining, and the scope of the technical idea of the present invention is not limited by the embodiments and the accompanying drawings. . The scope of protection of the present invention should be interpreted by the claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

10: base frame 20: operation lever
30: grounding bar 40: instruction bar
100: spring rod 110: rod shaft
200: spring assembly 210: spring case
220: spring shaft 230: main spring
231: upper support plate 232: lower support plate
240: movement limiting means 241: upper fixing plate
241a: upper center hole 242: lower fixing plate
242a: upper center hole 243: upper ring
244: lower ring 300: shaft assembly
310: driving plate 311: first driving plate
312: 2nd drive plate 313: interlock groove
320: driven plate 330: shaft
340: indicator bar connecting shaft 350: plate connecting shaft
400: interlock lever 500: hold means
510: drive holding means 511: drive frame
511a: drive gear projection 511b: drive gear groove
512: drive spring 520: driven hold means
521: driven frame 521a: driven gear projection
521b: driven gear groove 522: driven spring

Claims (13)

A spring rod provided at an upper portion of the base frame and connected to an operation lever and rotating according to the rotation of the operation lever;
A spring shaft provided at a lower portion of the spring rod in the base frame to be connected to the spring rod, vertically moving according to the rotation of the spring rod, and installed to penetrate vertically through the spring case, and an upper end thereof connected to the spring rod; A spring assembly including a main spring provided to surround the spring shaft in the spring case;
It is provided to rotate in accordance with the vertical movement of the spring assembly in the base frame, the ground bar is connected, connected to the spring case, the driving plate rotates in accordance with the vertical movement of the spring case, and is connected to the driving plate Rotating according to the rotation of the drive plate, the shaft extends out of the base frame, consisting of a driven plate coupled to the ground bar,
The driving plate is installed to face each other in the spring case in the same direction as the spring rod, and consists of a first and a second driving plate which is installed on the driving side and the ground side, respectively, the first driving plate on the base frame Extending to the outside, the instruction bar connecting shaft to which the instruction bar is connected is provided,
The spring rod is provided with an interlock lever so as to be positioned above the vertical line of the second driving plate, and the second driving plate is formed with an interlock groove that engages with the interlock lever to limit reverse rotation of the second driving plate. Ground drive mechanism of the gas insulated switchgear consisting of a shaft assembly. delete The method of claim 1,
The spring assembly is installed in the spring case, and includes a movement limiting means for limiting the vertical movement of the main spring,
The movement limiting means is installed on the upper and lower portions in the spring case, respectively, the upper fixing plate and the lower fixing plate formed with an upper center hole and a lower center hole,
And a top ring and a bottom ring installed on the main spring shaft, the top ring and the bottom ring installed on the top and bottom of the main spring. The method of claim 3, wherein
The movement limiting means further includes an upper support plate and a lower support plate installed on the top and bottom of the spring,
The upper ring is installed above the upper support plate, the lower ring is a ground drive mechanism of the gas insulated switchboard is installed below the lower support plate. delete delete The method of claim 1,
The driven plate is connected by the drive plate and the plate connecting shaft, the ground drive mechanism of the gas insulated switchgear is installed in parallel with the second drive plate. delete The method of claim 1,
And holding means for inhibiting operation of the shaft assembly such that the shaft assembly is operated while the spring assembly is fully in operation. The method of claim 1,
The gas insulated switchgear further comprises a drive holding means positioned at a lower portion of the drive plate, the drive frame being geared with the drive plate, and a drive spring installed in the base frame and connected to one side of the drive frame. Ground drive mechanism. The method of claim 10,
A driving gear protrusion is formed in the driving frame, and a driving gear groove is formed in the driving plate to engage with the driving gear protrusion. The method of claim 1,
The gas insulated switchgear further comprises a driven holding means positioned in the lower portion of the driven plate, the driven frame being geared with the driven plate, and driven springs installed in the base frame and connected to one side of the driven frame. Ground drive mechanism. The method of claim 12,
And a driven gear protrusion formed in the driven frame, and a driven gear groove formed in the driven plate to engage the driven gear protrusion.

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