KR200492868Y1 - Mechanical spring operating device of circuit breaker of gas insulated switchgear - Google Patents

Abstract

The present invention provides an electric spring manipulator for a gas insulated switchgear breaker. The electric spring manipulator for a gas insulated switchgear breaker includes a main lever that rotates during an input or open operation, and one end is pushed and rotated according to the rotation of the main lever. An open lever, a spring plate disposed to be spaced apart from the other end of the open lever at a set distance, a return spring for elastically supporting the other end of the open lever and one surface of the spring plate, and installed at each of both ends of the return spring It includes a buffer part.

Description

Electric spring actuator for gas insulated switchgear circuit breaker {MECHANICAL SPRING OPERATING DEVICE OF CIRCUIT BREAKER OF GAS INSULATED SWITCHGEAR}

The present invention relates to an electric spring manipulator for a gas insulated switchgear circuit breaker, and more particularly, to an electric spring manipulator for a gas insulated switchgear circuit breaker capable of improving the durability of a spring during trip-free prevention and closing and opening operations.

Usually, the breaker is Song. In a substation system or electrical circuit, the load is opened or closed or grounded. It refers to a device that cuts off the current in case of an accident such as a short circuit.

The breaker is tasteless with excellent insulation properties. Odorless. In a tank-type metal container filled with non-toxic inert high insulating gas, the blocking part is insulated with an insulating material and assembled, and the converter in normal use can be manually opened or closed, or can be opened and closed from a distance by an electric control device outside the metal container In case of overload or short circuit, it automatically cuts off the converter to protect the power system and load.

In the case of installing a fixed contactor and a movable contactor in the cut-off part of the gas circuit breaker to cut off the converter as described above, to make the fixed contactor and the movable contact come in contact with each other to allow current to flow, and a large current flows due to a breakdown somewhere in the line. The moving part is removed from the fixed part as soon as possible to cut off the current.

Here, the electric spring manipulator is a mechanism for operating the circuit breaker to block or connect current, and performs a blocking or connecting operation using the compressed energy of a spring installed in the manipulator.

1 is a view showing an open operation part when a conventional electric spring manipulator is inserted.

When the conventional electric spring operation is applied, the open operation part is the main lever (1), the open lever (2), the open latch (3), the open coil (4), the open lever return spring (5), and the open latch. It includes a return spring (6), a spring plate (7), and a guide (8).

Here, the main lever (1), the open lever (2), and the open latch (3) are arranged to rotate by the shaft at different positions.

In addition, the open coil 4 is fastened to the manipulator frame-in support portion 9 through bolts.

The open lever return spring (5) is assembled to the open lever (3) and the spring plate (7) in a compressed state.

One end of the open lever 2 and the guide 7 are spaced apart from each other.

One end of the open lever return spring 5 is supported by one end of the open lever 2 and the other end is supported by the guide 7.

Here, the guide 7 is positioned inside the open lever return spring 5 with one end protruding so that the open lever return spring 5 does not come off during operation of the manipulator.

As the main lever 1 rotates, the input and open operation of the manipulator are distinguished.

Therefore, the main lever 1 is restrained while maintaining the balance of force by the open lever 2, the open latch 3, the open lever return spring 5, and the open latch return spring 6 during the input.

The open lever return spring (5) serves to ensure that the open lever (2) is in the correct position due to vibration due to an impact that may occur during the manipulator input operation.

The open latch 3 can maintain the correct position by the open latch return spring 6.

The main lever (1), open lever (2), open latch (3), pin (4'), roller (not shown), etc., are continuously subjected to a strong load of the spring. Is in a state.

2 is a view showing the closing operation of the conventional electric spring manipulator. 3 is a view showing an open operation of a conventional electric spring manipulator.

2 and 3, in the open operation, when power is applied to the open coil 4, the pin 4'moves in the direction of the arrow and pushes the open latch 3.

The open latch 3 is rotated at a certain angle along the clockwise direction.

At the same time, the open lever 2 is rotated counterclockwise while compressing the open lever return spring 5.

The main lever (1), which was constrained by the open lever (2), rotates about 45 degrees counterclockwise while the open lever (2) rotates to achieve an open operation of the manipulator.

During the closing operation, the main lever (1) pushed by the cam rotates about 45 degrees clockwise and presses the open lever (2).

Subsequently, the open lever return spring 5 is further compressed and the open lever 2 rotates clockwise by the compressive force of the open lever return spring 5 as soon as it is caught by the pin of the main lever 1.

Then, by the compression force of the compressed open latch return spring 5, the open latch 3 rotates at a certain angle along the counterclockwise direction.

At this time, the main lever 1, the open lever 2, and the open latch 3 are all restrained, and the closing operation is completed.

In this open and close operation, the following problems occur.

Conventionally, when the main lever 1 is operated in the manipulator input operation, it rotates counterclockwise while pressing the open lever 2.

Then, the open lever return spring 5 is further compressed, and after that, when the rotation of the main lever 1 is completed, the open lever 2 is rotated by the compression force of the return spring.

At this time, the return spring does not perform a simple translational motion, but a jumping phenomenon occurs that is separated from the support point by a strong spring force over a certain level.

Due to this jumping phenomenon, the return spring 5 is impacted while hitting the open lever 2 and the spring plate 7, respectively, and a problem occurs in that the end of the return spring 5 is fatigued and damaged between repeated collisions.

As a prior document related to the present invention, there is Korean Patent Registration No. 10-0802909 (registration date: February 1, 2008).

The purpose of this paper is to install elastic cushioning members at both ends of the return spring disposed between the open lever that rotates during the insertion and opening operation and the guide disposed at the position corresponding to the end thereof to easily absorb external shocks. Provides an electric spring actuator for a gas insulated switchgear circuit breaker that can prevent damage.

In order to achieve the above problems, the present invention provides an electric spring actuator for a gas insulated switchgear circuit breaker.

The electric spring manipulator for the gas insulated switchgear circuit breaker has a main lever that rotates during an input or open operation, an open lever that is pushed and rotated according to the rotation of the main lever, and the other end of the open lever is spaced apart from each other by a set distance. A spring plate to be formed, a return spring for elastically supporting the other end of the open lever and one surface of the spring plate, and a buffer portion installed at each of both ends of the return spring.

Here, the buffer unit may include a first buffer member disposed between one end of the return spring and the other end of the open lever, and a second buffer member disposed between the other end of the return spring and one surface of the spring plate. desirable.

And it is preferable that the outer diameters of the first buffer member and the second buffer member are formed substantially the same as the outer diameters of the other ends of the return spring.

In addition, the first buffer member is preferably installed by being fitted into an installation groove formed at the other end of the open lever.

In addition, the inner surface of the installation groove is formed in a concave shape,

It is preferable that one surface of the first buffer member is formed in a convex shape so as to contact the inner surface of the installation groove with a curved surface.

According to the above solving means, the present design is to prevent external impact by installing elastic buffer members at both ends of the return spring disposed between the open lever rotated during the input and open operation and the spring plate disposed at a position corresponding to the end thereof. It is easily absorbed and has the effect of preventing damage to the spring.

In addition, the present invention has the effect of preventing the buffer member itself from being damaged by repeated buffering action by configuring the buffer members installed at both ends of the return spring to contact the concave grooves formed in the counterpart in curved contact. .

1 is a view showing an open operation part when a conventional electric spring manipulator is inserted.
2 is a view showing the closing operation of the conventional electric spring manipulator.
3 is a view showing an open operation of a conventional electric spring manipulator.
4 is a view showing the configuration of the electric spring manipulator for a gas insulated switchgear circuit breaker according to the present invention.
5 is a perspective view showing a buffer member according to the present invention.
6 is a view showing an arrangement configuration of a buffer member according to the present invention.
7 is a view showing an example in which the auxiliary guide rod is further formed in the installation groove according to the present invention.
8 is a view showing another embodiment of the first buffer member and the installation groove according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings so that those of ordinary skill in the art to which the present invention belongs can easily implement.

The present invention may be implemented in various forms and is not limited to the embodiments described herein.

In order to clearly describe the present invention, parts irrelevant to the description are omitted, and the same reference numerals are attached to the same or similar components throughout the specification.

Hereinafter, it means that an arbitrary configuration is provided or arranged on the "upper (or lower)" or "upper (or lower)" of the substrate, wherein the arbitrary configuration is provided or arranged in contact with the upper (or lower) surface of the substrate. Means that.

In addition, it is not limited to not including other configurations between the substrate and any configuration provided or disposed on (or under) the substrate.

Hereinafter, an electric spring manipulator for a gas insulated switchgear circuit breaker according to the present invention will be described with reference to the accompanying drawings. FIG. 4 is a view showing a configuration of an electric spring manipulator for a gas insulated switchgear circuit breaker according to the present invention.

4, the electric spring manipulator for a gas insulated switchgear circuit breaker according to the present invention has a main lever (100). The main lever 100 is supported to be rotatable by a first shaft 101.

An open lever 200 is disposed on one side of the main lever 100. The open lever 200 is supported so as to be rotatable by the second shaft 201. The open lever 200 has a predetermined length along the top and bottom.

When the main lever 100 rotates in a clockwise direction, the main lever 100 may contact and press the one side of the open lever 200. Accordingly, the open lever 200 is rotated in a counterclockwise direction.

On one side of the open lever 200, an open latch 300 is disposed to be rotatable by a third shaft 301.

One end of the open latch 300 is elastically supported through a support 9 (refer to FIG. 1) and an elastic spring 400 disposed at the upper end thereof.

An open coil 4 (refer to FIG. 1) is disposed on the upper end of the support 9. The open coil 4 has a pin 4'that moves downward when external power is applied.

Accordingly, when external power is applied to the open coil 4, the pin operates in the direction of the arrow and presses the other end of the open latch 300 downward. Accordingly, the open latch 300 is rotated in a clockwise direction. And, the elastic spring 400 is compressed.

On the other hand, a spring plate 700 is disposed near the other end of the open lever 200 according to the present invention.

The spring plate 700 is spaced a predetermined distance from the other end of the open lever 200.

A return spring 500 is disposed between the other end of the open lever 200 and the spring plate 700.

One end of the return spring 500 elastically supports the other end of the open lever 200, and the other end is elastically supported by the spring plate 700.

In addition, a guide member 800 is installed on the spring plate 700.

The guide member 800 has a head portion 810 fixed to a guide, and a guide rod 820 extending from the head portion 810 and disposed inside the return spring 500.

Accordingly, the return spring 500 according to the present invention may maintain a constant path while the return spring 500 is compressed and relaxed. Also, it is possible to prevent the release of the return spring.

Buffers are disposed at both ends of the return spring according to the present invention.

5 is a perspective view showing a buffer member according to the present invention. 6 is a view showing an arrangement configuration of a buffer member according to the present invention.

Referring to FIG. 5, the buffer unit 600 according to the present invention includes first and second buffer members 610 and 620. As shown in FIG. 6, the first and second buffer members 610 and 620 may use urethane washers.

That is, the buffer part 600 includes a first buffer member 610 disposed between one end of the return spring 500 and the other end of the open lever 200, and the other end of the return spring 500 and the spring. It includes a second buffer member 620 disposed between the one surface portion of the plate 700.

The first buffer member 610 is formed in a ring shape and is fixed to one end of the return spring 500.

The first buffer member 610 is fixed to one end of the return spring 500 through an adhesive. Of course, in addition to chemical fixing, the first buffer member 610 may be injection-molded so as to be integral with one end of the return spring 500.

In addition, the second buffer member 620 is fixed to the other end of the return spring 500 through an adhesive. Of course, in addition to chemical fixing, the second buffer member 620 may be injection-molded so as to be integral with a part of the other end of the return spring 500.

In addition, outer diameters of the first buffer member 610 and the second buffer member 620 according to the present invention may be formed substantially the same as the outer diameters of the other ends of the return spring 500.

Here, the second buffer member 620 according to the present invention may have a ring shape, but may be configured to be additionally supported by being inserted into the guide rod 820 as shown in FIG. 5.

Meanwhile, as shown in FIG. 5, the first buffer member 610 is installed by being fitted into an installation groove 210 formed at the other end of the open lever 200.

Accordingly, the first buffer member 610 installed at one end of the return spring 500 according to the present invention may be fitted and fixed in the installation groove 210 and thus may not be separated from the outside.

The installation groove 210 is preferably formed as a ring-shaped groove.

Through the above configuration, the present design returns by absorbing the impact force generated when it collides with the spring plate and the open lever through the buffer unit according to the present design when a jumping phenomenon occurs at one end of the return spring due to repeated rotation of the open lever. It has the advantage of increasing the durability life of the spring itself.

In addition, since the buffer unit according to the present invention has a structure that is fixed to both ends of the return spring through adhesives, it does not affect the operating performance of the manipulator at all, and has the advantage of being able to simply attach it during assembly.

In addition, the outer diameters of the first buffer member 610 and the second buffer member 620 according to the present invention may be formed substantially the same as the outer diameter of the other end of the return spring (500). Accordingly, when the first and second buffer members 610 and 620 act as buffers at both ends of the return spring 500, shape deformation may be minimized.

Meanwhile, each of the first and second buffer members 610 and 620 according to the present invention achieves a set thickness.

However, the first and second buffer members 610 and 620 may be stacked to form a plurality of layers to form an overall thickness of a predetermined or more.

Here, the thicknesses of the first buffer members 610 and the second buffer members 620 may be the same or may be formed differently.

For example, when the overall thickness is increased by stacking a plurality of first buffer members 610 having different thicknesses, there is an advantage of being able to finely control the increased thickness.

Accordingly, the elastic modulus of the reconstruction spring 500 according to the present invention may be variably adjusted.

In addition, although not shown in the drawings, each of the first buffer members 610 and the second buffer members 620 stacked in surface contact with each other according to the present invention may be fitted and coupled to each other.

For example, a groove may be formed on one surface of each of the first buffer members 610 and a fitting end may be formed on the other surface. Accordingly, the fitting end of one first cushioning member 610 may be fitted and coupled to the groove of the other first cushioning member 610.

Accordingly, it is possible to solve the problem that the positions of the first buffer members 610 coupled to each other are displaced in a stacked state.

In addition, the above-described fitting end and groove may be formed in a polygonal shape. Accordingly, the first buffer members 610 stacked on each other may be prevented from being relatively rotated or twisted to stably elastically support the return spring 500.

Although the first buffer members 610 have been representatively described, the second buffer members 620 may also be the same.

7 is a view showing an example in which the auxiliary guide rod is further formed in the installation groove according to the present invention.

As shown in FIG. 7, an auxiliary guide rod 220 protruding to the outside may be further formed in the center of the inner surface of the installation groove 210 according to the present invention.

One end of the return spring 500 is fitted to the auxiliary guide rod 220 having a predetermined length.

Through this, when the open lever repeatedly rotates for the closing or opening operation of the circuit breaker, one end of the return spring may not be separated because it is supported by the auxiliary guide rod as described above.

8 is a view showing another embodiment of the first buffer member and the installation groove according to the present invention.

As shown in Figure 8, the inner surface of the installation groove 210' according to another embodiment of the present invention may be formed in a concave shape.

In addition, one surface of the first buffer member 610 ′ according to another embodiment of the present invention may be formed in a convex shape so as to contact the inner surface of the installation groove 210 ′ with a curved surface.

One surface of the first buffer member 610 ′ is fitted into an installation groove 210 ′ formed at the other end of the rotating open lever 200 to contact the inner surface of the installation groove 210 ′.

When the open lever 200 is repeatedly rotated, the first buffer member 610 ′ inserted into the installation groove 210 ′ may also reduce friction with the inner surface of the installation groove 210 ′ according to the rotation.

Accordingly, in the present invention, the first buffer member 610 ′ and the installation groove 210 ′ are in a state in which they are in curved contact with each other, thereby reducing the friction between the first buffer member 610 ′ and the installation groove 210 ′. It is also possible to prevent damage to the 1 buffer member 610'.

In addition, since damage to the first buffer member 610 ′ is prevented, one end of the return spring 500 may be prevented from being separated from the installation groove 210 ′ of the open lever 200.

Accordingly, the present invention uses the stored energy of the input and open spring to instantaneously move with a large mechanical energy, and thus, in some parts, a certain degree of durability can be secured in a manipulator in which a large load acts.

In particular, as described above, the return spring is impacted by hitting the open lever and the spring plate, respectively, due to the jumping phenomenon generated in the manipulator input operation, and fatigue damage occurs at the end of the return spring between repeated operations. In the present design, a buffer member is installed at both ends of the return spring to prevent the spring separation caused by not being located in the correct position according to the length reduction due to the breakage of the end of the return spring.

In addition, it is possible to move the open lever to an accurate position by improving the compression force of the spring.

Through this, in the present invention, it is possible to efficiently prevent the occurrence of a trip-free phenomenon, which is an immediate open operation while the return spring performs its original role.

As described above, specific embodiments related to the present invention have been described, but it is obvious that various implementation modifications are possible within the limit not departing from the scope of the present invention.

Therefore, the scope of the present invention is limited to the described embodiments and should not be transmitted, and should be determined by the claims and equivalents as well as the claims to be described later.

That is, the above-described embodiments are illustrative in all respects and should be understood as not limiting, and the scope of the present invention is indicated by the claims to be described later rather than the detailed description, and the meaning and scope of the claims and their equivalents All changes or modifications derived from the concept should be interpreted as being included in the scope of the present invention.

100: main lever
200: open lever
210, 210': installation groove
220: auxiliary guide rod
300: Open Latch
400: elastic spring
500: return spring
600: buffer part
610, 610': first buffer member
620: second buffer member
700: guide
800: guide member

Claims (5)

A main lever that rotates during an input or open operation; an open lever whose one end is pushed and rotated according to rotation of the main lever; a spring plate disposed spaced apart from the other end of the open lever by a set distance; and the other end of the open lever In the electric spring actuator for a gas insulated switchgear circuit breaker having a return spring for elastically supporting one surface of the spring plate,
Buffer portions are respectively installed at both ends of the return spring,
The buffer unit,
A first buffer member disposed between one end of the return spring and the other end of the open lever,
And a second buffer member disposed between the other end of the return spring and one surface of the spring plate,
The first buffer member,
It is installed by being fitted into an installation groove formed at the other end of the open lever,
A guide member is installed on the spring plate,
The guide member has a head fixed to the guide, and a guide rod extending from the head and disposed inside the return spring,
The first buffer member and the second buffer member are stacked to form a plurality of layers,
Each of the first buffer member and the second buffer member forming a plurality are fitted and coupled to each other,
An auxiliary guide rod protruding to the outside is further formed in the center of the inner surface of the installation groove, and the installation groove is formed as a ring-shaped groove,
Electric spring actuator for gas insulated switchgear circuit breaker.
delete The method of claim 1,
The outer diameters of the first buffer member and the second buffer member,
Formed substantially the same as the outer diameter of the other end of the return spring,
Electric spring actuator for gas insulated switchgear circuit breaker.
delete The method of claim 1,
The inner surface of the installation groove is formed in a concave shape,
One side of the first buffer member,
Formed in a convex shape so as to contact the inner surface of the installation groove curved surface,
Electric spring actuator for gas insulated switchgear circuit breaker.

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