KR200465586Y1 - Actuator supporting apparatus for switching mechanism of air citcuit breaker - Google Patents

Abstract

The present invention is to provide a coil support device that can prevent the damage and malfunction of the actuator by absorbing vibration or shock from the opening and closing mechanism in the coil support device as an actuator support device for tripping and closing of the air circuit breaker. Supporting rod (fixing rod) is fixedly installed to extend upwards on the upper surface of the opening and closing mechanism for the air circuit breaker according to the design; The support rod is extended from the upper portion and the upper portion to prevent the flow of at least one of a trip-actuating actuator or an closing actuator on the upper surface of the air circuit breaker opening and closing mechanism. A coil holder having a hollow lower extension for insertion and connection therein; A fixing screw for fixing a connection between the coil holder and the support rod; And a fixing force between the fixing screw and the bottom surface of the inner wall of the lower extension of the coil holder to impart an elastic force to the coil holder to be in close contact with at least one of the trip operation actuator or the closing operation actuator and through the support rod. Disclosed is a coil supporting device of an opening and closing mechanism for an air circuit breaker including a shock absorbing means for buffering an impact from the opening and closing mechanism.

Air circuit breaker, actuator, coil support device

Description

Actuator support device of opening and closing mechanism for air circuit breaker {ACTUATOR SUPPORTING APPARATUS FOR SWITCHING MECHANISM OF AIR CITCUIT BREAKER}

The present invention relates to a support device for an actuator (actuator) for remote closing or tripping operation in the air circuit breaker, and in particular, an actuator support device capable of mitigating the shock transmitted from the opening and closing mechanism when the air circuit breaker during the closing operation or tripping operation It is about.

The air circuit breaker automatically shuts down the system power circuit in the event of a breakdown of the power system, a power transmission and reception of a relatively low voltage system power circuit of several hundred volts using air as an arc extinguishing medium. It is a power device in charge of protecting.

In such an air circuit breaker, the opening and closing mechanism is largely divided into a movable contactor, a fixed contactor, which is a part which finally opens and closes a circuit, and a driving and power transmission mechanism connected to the movable contactor to provide opening and closing driving force of the movable contactor. Particularly, as the opening and closing driving force generating device (simply opening and closing driving device), the movable contactor is called an open position (aka off position) by manual or electric (driven by an electric motor), and also called as trip position or reset position. In order to generate momentary large power to drive from the closing position to the closing position or from the closing position to the open position, the elastic energy of the spring is charged and then momentarily discharging A spring drive device for opening and closing a circuit is generally used.

Therefore, the trip spring (closing spring) and the closing spring (opening spring) for opening and closing the circuit to the operation position of the opening or closing mechanism of the air circuit breaker is usually configured to provide a driving force for opening the circuit A trip actuation actuator and an input actuation actuator are respectively provided for triggering the elastic energy force of the input spring providing the driving force for the trip spring and the circuit input. Here, each of the trip actuation actuators and the input actuation actuators uses the magnetic force of the electromagnet. In other words, a closing coil and a trip coil are used as the actuator to provide an electromagnetic force for triggering the release of the closing spring and the trip spring.

Therefore, there is also a need for a support device for fixedly installing these closing actuation actuators and trip acting actuators to the opening and closing mechanism.

An object of the present invention is to provide a support device for fixedly installing an actuating or tripping actuator in an opening / closing mechanism in an air circuit breaker, and in particular, for an air circuit breaker capable of preventing an impact from the opening / closing mechanism from being transmitted to the actuator. It is to provide an actuator supporting device of the opening and closing mechanism.

An object of the present invention, in the actuator support device of the opening and closing mechanism for the air circuit breaker,

A supporting rod fixedly installed upwardly on an upper surface of the air circuit breaker opening and closing mechanism;

The support rod is extended from the upper portion and the upper portion to prevent the flow of at least one of a trip-actuating actuator or an closing actuator on the upper surface of the air circuit breaker opening and closing mechanism. An actuator holder having a hollow lower extension for insertion and connection therein;

A fixing screw for fixing a connection between the actuator holder and the support rod; And

It is installed between the fixing screw and the bottom surface of the inner wall of the lower extension of the actuator holder, imposes an elastic force on the actuator holder to be in close contact with at least any one of the actuator for the trip operation or the actuation of the actuator and through the support rod It can be achieved by providing an actuator supporting device of the opening and closing mechanism for the air circuit breaker according to the present invention, characterized in that it comprises a buffer means for buffering the shock from the opening and closing mechanism.

The actuator supporting device of the opening and closing mechanism for the air circuit breaker according to the present invention buffers the shock transmitted through the support rod from the opening and closing mechanism during the opening and closing operation of the air circuit breaker through the shock absorbing means, so that the impact is transmitted to the actuation or tripping actuator. Can be prevented, preventing breakage of the closing or tripping actuator, ensuring the operational reliability of the closing or tripping actuator, and deviating from the supporting device of the closing or tripping actuator The effect which can also be prevented can be obtained.

The purpose of the present invention and the constitution and effect of the present invention to achieve the same will be more clearly understood by the following detailed description of the preferred embodiment of the present invention with reference to the accompanying drawings.

First, with reference to Figure 1 will be described the configuration of the actuator support device of the opening and closing mechanism for the air circuit breaker according to the present invention.

The actuator supporting device of the opening and closing mechanism for the air circuit breaker according to the present invention supports the actuator (3) which is at least one of an input actuating actuator and a tripping actuator on the top plate 10b of the air circuit breaker opening and closing mechanism 10. To this end, it is a device for supporting the flow (especially the vertical flow) of at least one of the input action actuator and the trip action actuator in more detail.

The actuator supporting device of the opening and closing mechanism for the air circuit breaker according to the present invention includes a supporting rod 1, an actuator holder 5, a fixing screw 6, and a compression spring 4 as a shock absorbing means. It is configured to include).

The support rod 1 is fixedly installed to extend upward on the upper surface of the air circuit breaker opening / closing mechanism 10. The support rod 1 has a polygonal cross-sectional shape and may preferably be composed of a quadrangular or hexagonal metal column.

As can be seen in FIGS. 1 and 2, the actuator holder 5 is a trip actuating actuator or actuator for closing operation on the upper surface of the opening / closing mechanism 10 (see top plate 10b). The upper part 5a which prevents the flow of at least one of the actuators 3 (especially an up-down flow), and the hollow which extends from the upper part 5a, and inserts and supports the support rod 1 inside. It has a lower extension part 5b. In the actuator holder 5, an inner lower end portion of the lower extension portion 5b is provided with a rectangular through hole, which is preferably formed in a quadrilateral or a hexagon, in order to allow the support rod 1 to pass therethrough.

As can be seen from FIGS. 3 to 6, the actuator holder 5 has a plate-like, substantially triangular upper part 5a, with the upper part 5a being a tripping actuator and tripping drive. Press at least one of the actuating actuators to support it.

3 to 6, at least one protrusion 3a1 and 3b1 is provided to protrude upward from the upper surface of the trip operation actuator 3b or the closing operation actuator 3a. Here, the protrusion part 3a1 is a protrusion provided in the upper surface of the actuation operation actuator 3a, and the protrusion part 3b1 is a protrusion provided in the upper surface of the trip operation actuator 3b.

Relative to the protrusions 3a1 and 3b1, the upper portion 5a of the actuator holder 5 is provided with an insertion hole 5d spaced apart from the hollow portion 5c corresponding to the center portion and formed at three vertices of the triangle.

As can be seen in FIG. 5, the heights of the protrusions 3a1 and 3b1 are preferably made higher than the thickness of the upper portion 5a in the actuator holder 5. The purpose of manufacturing the height of the protrusions 3a1 and 3b1 higher than the thickness of the upper portion 5a in the actuator holder 5 is from the support rod 1 imposed on the actuator holder 5 or the actuator 3b for tripping operation. Or the compression spring 4 absorbs (absorbs) the shock or vibration upward from the actuator 3a for the closing operation, but the upward movement of the minute actuator holder 5 occurs when the shock or vibration occurs upward. Therefore, in order to prevent the actuator holder 5 from escaping from the protrusions 3a1 and 3b1 and detaching from the tripping actuator 3b or the closing operation actuator 3a when the upward movement occurs.

The fixing screw 6 is a means for fixing the connection between the actuator holder 5 and the support rod 1. To this end, the fixing screw 6 may be fastened to the inner wall surface of the fixing rod 6 at the upper end of the support rod 1. Relative threads (not shown) are provided.

As best shown in FIG. 3, the fixing screw 6 is a spring seat member that supports the upper end of the compression spring 4, and further includes a washer 6a. The washer 6a may be one that is integrally formed with the fixing screw 6, and a washer 6a that is made separately from the fixing screw 6 may also be used.

As a shock absorbing means, the compression spring 4 is provided between the fixing screw 6 and the bottom surface of the inner wall of the lower extension of the actuator holder 5, so that at least any one of the tripping actuator 3b or the closing operation actuator 3a is provided. An elastic force is applied to the actuator holder 5 to be in close contact with one. In addition, the compression spring 4 can cushion the shock from the opening and closing mechanism 10, in particular the shock or vibration of the support rod 1 moving downward through the support rod 1.

The compression spring 4 may be selectively constituted by a compression spring having at least the same elastic force as the sum of the suction force of the trip operation actuator 3b and the closing operation actuator 3a. Here, the purpose of selectively configuring a compression spring having at least the same elastic force as the sum of the suction force of the trip operation actuator 3b and the closing operation actuator 3a is for the trip operation actuator 3b and the closing operation during normal operation. The case in which the actuator 3a simultaneously operates does not occur, but even when the trip operation actuator 3b and the closing operation actuator 3a operate simultaneously due to a malfunction, the trip operating actuator 3b and the closing operation are used. The compression spring 4 moves the actuator holder 5 so that the actuator holder 5 does not separate from the tripping actuator 3b and the closing operation actuator 3a even when the vibration is transmitted simultaneously from the actuator 3a. This is to press down the elastic pressure more than the sum of the suction force of the trip operation actuator 3b and the closing operation actuator 3a.

In Fig. 1, the support bracket 2 is provided adjacent to the support rod 1, and is a means for supporting the actuator 3 so as to prevent horizontal flow of any one of the actuator for the trip operation or the actuator for the closing operation. And an “L” shaped plate, and having a plurality of fixing screw holes, inserting a screw through the screw holes, so that the side of the actuator 3 of the trip operation actuator or the closing operation actuator is Can be fixed so as not to flow. Therefore, when both the trip operation actuator and the closing operation actuator are provided, two support brackets 2 are also provided correspondingly.

A method of assembling the actuator supporting device of the opening and closing mechanism for a breaker according to the present invention configured as described above will be described with reference to FIGS. 3, 4, and 6.

First, the upper portion of the support rod 1 is placed inside the lower extension portion 5b of the actuator holder 5 so that the upper end portion of the support rod 1 enters the lower extension portion 5b through the rectangular through hole. Insert. At this time, when the actuator supporting device of the air circuit breaker opening / closing mechanism according to the present invention supports both the actuator 3b for the trip operation and the actuator 3a for the closing operation, the insertion part 5d trips, respectively. The direction of the upper holder 5a of the triangular actuator holder 5 is determined so as to be positioned at the position where the operating actuator 3b and the protrusions 3b1 and 3a1 of the actuating actuator 3a are fitted. Fit the upper end of the support rod (1) inside the lower extension (5b). If the actuator supporting device of the air circuit breaker opening / closing mechanism according to the present invention is used to support only one of the actuator 3b for the trip operation and the actuator 3a for the closing operation, the insertion hole 5d is used for tripping. The actuator holder 5 is determined by determining the direction of the upper portion 5a of the triangular actuator holder 5 so as to be positioned at the position where the protrusion 3b1 or 3a1 of the actuating actuator 3b or the actuating actuator 3a is fitted. The protrusion 3b1 or 3a1 of either the trip operation actuator 3b or the closing operation actuator 3a is inserted into the insertion hole 5d of.

Next, the compression spring 4 is fitted between the upper end of the supporting rod 1 that has entered the lower extension 5b and the inner circumferential surface of the lower extension 5b.

Next, the fixing screw 6 is inserted into the screw hole formed in the center of the upper end portion of the support rod 1 through the inside of the lower extension portion 5b and tightened with a screw driver. The upper end of the compression spring 4 is pressurized by the washer 6a at the lower part of the actuator, and the actuator holder 5 remains engaged with the support rod 1, and according to the compressed length of the compression spring 4 By the elastic force, the actuator holder 5 presses the tripping actuator 3b or the closing operation actuator 3a downward. This completes the assembly of the actuator supporting device of the opening and closing mechanism for the air circuit breaker according to the present invention.

Referring to the effect of the actuator support device of the opening and closing mechanism for the air circuit breaker according to the present invention configured as described above are as follows.

By the actuator supporting device of the opening and closing mechanism for the air circuit breaker according to the present invention, the compression spring 4 is fixed to the screw even when supporting both or either of the tripping actuator 3b and the closing operation actuator 3a. It is provided between 6 and the inner wall bottom surface of the lower extension part of the actuator holder 5, and the elastic force to the actuator holder 5 so that it may be in close contact with at least one of the trip operation actuator 3b or the closing operation actuator 3a. Is applied, the actuator holder 5 is firmly without detachment from at least one of the tripping actuator 3b or the closing operation actuator 3a, and the actuator for tripping operation 3b or the closing operation actuator 3a. At least one of them can be supported. In addition, the compression spring 4 can cushion the shock from the opening and closing mechanism 10, in particular the shock or vibration of the support rod 1 moving downward through the support rod 1.

In addition, the compression spring 4 is selectively comprised by the compression spring which has an elastic force at least equal to the sum total suction force of the trip operation actuator 3b and the input operation actuator 3a. Therefore, even when the trip operation actuator 3b and the closing operation actuator 3a are operated simultaneously due to a malfunction, the compression spring is also subjected to the vibration transmitted simultaneously from the tripping actuator 3b and the closing operation actuator 3a. (4) The actuator holder 5 acts to be pressed downward with an elastic pressure equal to or greater than the sum of suction force of the trip operation actuator 3b and the closing operation actuator 3a, so that the actuator holder 5 actuates the trip operation actuator 3b. ) And the actuator 3a for closing operation.

1 is a partial exploded perspective view showing the installation position on the opening and closing mechanism of the actuator support device of the opening and closing mechanism for the air circuit breaker according to the present invention,

Figure 2 is an exploded perspective view of the actuator supporting device of the opening and closing mechanism for the air circuit breaker as viewed obliquely from above,

Figure 3 is an exploded longitudinal cross-sectional view of the actuator and the actuator support device showing the assembly process of the actuator support device of the opening and closing mechanism for the breaker according to the present invention,

Figure 4 is a longitudinal cross-sectional view of the actuator and the actuator support device showing the assembly completion state of the actuator support device of the opening and closing mechanism for the air circuit breaker according to the present invention,

5 is an exploded perspective view of an actuator and an actuator support device as viewed from an oblique view from above as an explanatory view showing the relationship between the upper thickness of the actuator holder and the height of the protrusions of the actuator in the actuator support device of the opening and closing mechanism for a circuit breaker according to the present invention; ,

Figure 6 is a perspective view of the actuator support device of the opening and closing mechanism for a breaker according to the present invention obliquely looking down from the top of the assembled state with the actuator.

DESCRIPTION OF THE REFERENCE NUMERALS

1: supporting rod 2: supporting bracket

3: Actuator 3a: Actuation Actuator

3a1: protrusion 3b: trip action actuator

3b1: stone

4: compression spring 5: actuator holder

5a: upper part 5b: lower extension part

5c: hollow part 5d: insertion study

6: set screw 6a: washer

10: opening and closing mechanism 10a: side plate

10b: tops

Claims (6)

In the actuator support device of the opening and closing mechanism for the air circuit breaker, A supporting rod fixedly installed upwardly on an upper surface of the air circuit breaker opening and closing mechanism; The support rod is extended from the upper portion and the upper portion to prevent the flow of at least one of a trip-actuating actuator or an closing actuator on the upper surface of the air circuit breaker opening and closing mechanism. An actuator holder having a hollow lower extension for insertion and connection therein; A fixing screw for fixing a connection between the actuator holder and the support rod; And It is installed between the fixing screw and the bottom surface of the inner wall of the lower extension of the actuator holder, imposes an elastic force on the actuator holder to be in close contact with at least one of the actuator for the trip operation or the actuation operation of the actuator holder and through the support rod Shock absorber means for buffering the shock from the opening and closing mechanism; Actuator supporting device of the opening and closing mechanism for a breaker. The method of claim 1, The shock absorbing means is an actuator supporting device of the opening and closing mechanism for a circuit breaker, characterized in that the compression spring having an elastic force of at least equal to the sum of the suction force of the trip operation actuator and the closing operation actuator. The method of claim 1, At least one protrusion provided to protrude upward from an upper surface of the trip operation actuator or the closing operation actuator; And And an insertion hole provided correspondingly to the protrusion on the upper part of the actuator holder. The method of claim 3, The height of the protrusion is an actuator supporting device of the opening and closing mechanism for a circuit breaker, characterized in that higher than the thickness of the upper portion in the actuator holder. 3. The method of claim 2, The fixing screw, Actuator support device of the opening and closing mechanism for the air circuit breaker further comprises a spring seat member for supporting the upper end of the compression spring. The method of claim 5, The spring seat member is an actuator supporting device of the opening and closing mechanism for the air circuit breaker, characterized in that consisting of a washer (washer).

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