KR101040044B1 - Vacuum interrupter control device - Google Patents

Abstract

The present invention provides a vacuum circuit breaker operation unit that simplifies the configuration of the operation base of a vacuum circuit breaker to facilitate maintenance, enables more stable operation with a simplified configuration, and reduces the number of parts to lower the manufacturing cost . In order to achieve the above-mentioned object, according to the present invention, there is provided an electric motor including a housing, a motor provided in the housing and powered by an external power source, an eccentric gear having one side coupled to the motor, A shaft arm which is rotatably coupled to the eccentric gear and converts the rotary motion of the eccentric gear into an up-and-down movement, a gear train which is provided below the shaft arm and rotates stepwise in a predetermined direction in accordance with the up- A camshaft portion horizontally provided on a lower portion of the housing and fixed to the camshaft and rotated uniformly by rotation of the camshaft, a spring portion provided at one end of the camshaft portion and rotating the camshaft portion by an elastic force, A switch unit provided on one side of the housing and instructing an operation of a trip operation or a closing operation, An elastic member provided at a lower portion of the switch portion and interposed between the switch portion and the axial chain arm to resiliently support the axial arm; a contact portion provided on the rear surface of the switch portion and in contact with the cam shaft portion, And a manipulation shaft portion provided at a lower portion of the housing and provided in parallel with the cam shaft portion.

Breaker, operation base, vacuum breaker, input, trip

Description

{VACUUM INTERRUPTER CONTROL DEVICE}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a vacuum circuit breaker actuator for operating a circuit breaker of a vacuum circuit breaker, and more particularly, To a breaker manipulation base.

Vacuum circuit breakers widely used in the 3.3-kV to 38-kV class are the most widely used vacuum circuit breakers in the world, including Korea, in the field of medium and high voltage systems since the late 1970s due to their excellent arc (ARC) capability in high vacuum conditions.

Such a vacuum circuit breaker is largely constituted by a blocking base and an operating base, and the circuit breaker is a device for blocking electricity. The operating base is a device for applying mechanical operation to the blocking end.

Conventionally, as a method of supplying energy to the operation base so as to operate the breaker portion of the conventional vacuum circuit breaker, there is used a general purpose closing coil electromagnet coil and a motor spring stored energy.

When the voltage is applied to the coil with the coil wound around the coil, the excitation coil generates an exciting force to generate a driving force. The structure of the vacuum circuit breaker is very simple, Is not used at present because it can not obtain stable and sensitive mechanical characteristics.

In the case of the electric spring operating method, which is a different method, a charging motor and a worm-gear are used to tension or compress the closing spring, The design of the vacuum circuit breaker operation base is complicated such as considering the capacity, rotation speed, reduction ratio of the worm gear, and durability, but satisfies the requirements of the vacuum circuit breaker against the operation voltage. Of the vacuum circuit breaker.

The operation base and the breaker unit of the vacuum breaker of this type are connected by a link connection method to connect the link and the breaker shaft so that the operation base is operated by the tension spring However, since the number of components is large, there is a problem that the assemblability, the productivity, the durability in use and the manufacturing cost are increased.

SUMMARY OF THE INVENTION The present invention has been made in order to solve such a problem, and it is an object of the present invention to simplify the construction of the operation base portion of a vacuum circuit breaker, to facilitate maintenance, to make a more stable operation with a simplified structure, And to provide a vacuum breaker operating base which is lowered.

In order to solve the above problems,

A vacuum breaker operating base for operating a vacuum circuit breaker, comprising: a housing; A motor provided in the housing and supplied with power from an external power source; An eccentric gear having one side coupled to the motor and rotating in the same direction as the rotation direction of the motor and eccentric on the other side; A shaft arm rotatably coupled to the eccentric gear and converting the rotational motion of the eccentric gear into an up and down movement; A cam follower provided at a lower portion of the shaft arm and rotating stepwise in a predetermined direction in accordance with a movement of the shaft arm; A cam shafts horizontally provided on a lower portion of the housing and fixed to the camshaft and rotated uniformly by rotation of the camshaft; A spring portion provided at one end of the camshaft portion and rotating the camshaft portion by an elastic force; A switch unit provided on one side of the housing and instructing an operation of a trip operation or a closing operation; An elastic member provided at a lower portion of the switch unit and interposed between the switch unit and the axial chain arm to elastically support the axial arm; A hook portion which is provided on a rear surface of the switch portion and contacts the cam shaft portion and receives a trip operation or a closing operation from the switch portion and transmits the trip or cam action to the cam shaft portion; And an operating shaft provided at a lower portion of the housing and provided in parallel with the camshaft.

The eccentric gear of the present invention is a bevel gear.

The race car of the present invention is characterized in that the engaging surface and the flat surface are formed on the outer circumferential surface and the shaft arm is lifted and lowered to be detached and attached to the engaging surface to rotate the cam in stages in a predetermined direction.

The camshaft portion of the present invention includes: a camshaft which is horizontal with the ground and rotatably engaged with the housing; A loading hook cam fixedly coupled to the camshaft and rotating in the same direction as the camshaft; An input cam fixedly coupled to the camshaft and rotatable in the same direction as the camshaft and detachable from the operating shaft; And a post-insertion crawler rotatably coupled to the other end of the closing hook cam.

The input cam of the present invention is characterized in that the outer circumferential surface is formed as an elliptical curved surface and the central axis is located at a position offset from the center of the elliptic curved surface.

The spring portion of the present invention includes a crank having one side portion coupled to the camshaft portion and rotating in the same direction as the rotation direction of the camshaft and having an eccentricity formed on the other side portion thereof; A closing spring support rod provided on the upper side of the housing horizontally with the ground; A closing spring rod eccentrically connected to the crank and formed with a groove having a predetermined length at one end thereof so as to contact the closing spring support rod and to convert rotational motion of the crank into upward and downward movement along the groove; And a closing spring provided on an outer peripheral surface of the closing spring rod and interposed between the closing spring rod and the closing spring support rod.

The switch unit of the present invention is characterized in that it comprises at least two switches.

The hook portion of the present invention includes a trip hook which is provided on the rear surface of the switch portion and is fixedly coupled to the other end portion of the camshaft portion and receives a trip operation from the switch portion.

The trip hook of the present invention is characterized in that at least three projections are formed.

The hook portion of the present invention is provided on the rear surface of the switch portion and is provided on the upper surface of the camshaft portion 200 and is rotatably coupled to the housing so as to receive a closing operation from the switch portion and transmit the closing operation to the camshaft portion And a closing hook.

The operation shaft portion of the present invention is provided at a lower portion of the housing and is provided in parallel with the cam shaft portion; A lever 1 and a lever 2 formed to extend from the operating shaft in the direction of the camshaft; A post-insertion crawler rotatably coupled to one side of the lever 1; An input cam roller rotatably coupled to one side of the lever 2; A blocking spring support bracket extending from the operating shaft; A shutoff lever which is formed extending from the setting axis and whose one end portion moves upward and downward with the operation shaft as the center of the circle; And a blocking spring provided on the blocking spring support bracket and providing an elastic force to push the blocking spring support bracket.

According to the present invention, it is possible to simplify the structure of the operation base portion of the vacuum circuit breaker to facilitate maintenance, and more stable operation can be achieved with a simplified structure, and the number of parts can be reduced to lower manufacturing cost.

The present invention relates to an apparatus for operating a vacuum circuit breaker for shutting off a system when an abnormal current is generated, and a vacuum breaker operating base for operating a vacuum circuit breaker.

Vacuum circuit breaker operation unit applies the mechanical operation to the circuit breaker to prevent the system from being damaged by abnormal current in case of abnormal current, so that the abnormal current is cut off and at the same time the emergency power source is supplied so that the system can operate safely.

When the development of the abnormal current is stopped in such a state that the emergency power source is turned on, it is not necessary to turn on the emergency power source. Therefore, the circuit breaker of the vacuum circuit breaker is connected to receive the normal current to apply the normal current It is the role of the vacuum breaker manipulation base.

1 and 2, the vacuum circuit breaker includes a housing 100, a motor 110 mounted on the housing 100 and supplied with power from an external power source, An eccentric gear 120 coupled to the eccentric gear 120 so as to rotate in the same direction as the rotation direction of the motor 110 and eccentric to the other side of the eccentric gear 120, A swing arm 140 provided below the shaft arm 130 and rotating stepwise in a predetermined direction in accordance with a movement of the swing arm 130 up and down, A cam shaft part 200 horizontally provided on a lower side of the cam shaft part 200 and horizontally disposed on the lower side of the cam shaft part 200 and rotating in the same direction by the rotation of the cam shaft 140, And rotates the cam shaft portion 200 by an elastic force A switch unit 400 provided on one side of the housing 100 and instructing an operation of a trip operation or a closing operation; a switch unit 400 provided below the switch unit 400, An elastic member 150 interposed between the shaft arms 130 to elastically support the shaft arms 130 and a resilient member 150 provided on the rear surface of the switch unit 400 and in contact with the cam shaft portion 200, A hook portion 500 for receiving a trip operation or a closing operation from the cam shaft portion 400 and transmitting the trip operation to the cam shaft portion 200 and an operation portion provided at a lower portion of the housing portion 100 and provided in parallel with the cam shaft portion 200 And a shaft portion (600).

The eccentric gear 120 corresponds to either a bevel gear or a gear that operates as described above.

3, a constant engagement surface 141 and a flat surface 143 are formed on the outer circumferential surface and the shaft arm 130 is lifted and lowered to attach and detach the engagement surface 141 Thereby rotating the knurled gear 140 stepwise in a predetermined direction.

4, the camshaft unit 200 includes a camshaft 210 that is horizontally aligned with the ground and is rotatably coupled to the housing 100, a camshaft 210 fixedly coupled to the camshaft 210, A closing cam 230 fixed to the camshaft 210 and rotatable in the same direction as the camshaft 210 and detachably attached to the operating shaft 600, And a post-insertion crawler 240 rotatably coupled to the other end of the input hook cam 220.

Here, the shape of the input cam 230 is formed such that the outer circumferential surface is formed as an elliptic curved surface, and the central axis is located at a position offset from the center of the elliptical curved surface.

5, one end of the spring portion 300 is coupled to the camshaft portion 200 and rotates in the same direction as the rotation direction of the camshaft 210, and the eccentric portion is formed in the other side portion. (310), a closing spring support rod (320) provided horizontally with the ground on the upper side of the housing (100), a groove eccentrically connected to the crank (310) A closing spring rod 330 which is in contact with the crank 310 and converts the rotational motion of the crank 310 into a rising and falling movement along the groove and a closing spring rod 330 provided on the outer circumferential surface of the closing spring rod 330, And a closing spring 340 interposed between the closing spring support rod 320 and the closing spring support rod 320.

The switch unit 400 includes at least two switches.

6, the hook unit 500 includes a trip unit 400 provided at the rear side of the switch unit 400 and fixed to the other end of the camshaft unit 200, for receiving a trip operation from the switch unit 400, And a hook 510. As shown in the drawing, the trip hook 510 is formed with at least three protrusions.

The hook portion 500 is provided on the rear surface of the switch portion 400 and is provided on the upper surface of the camshaft portion 200. The hook portion 500 is rotatably coupled to the housing 100, And an input hook 520 for receiving an operation and transferring the input operation to the camshaft unit 200.

7, the operation shaft portion 600 includes an operation shaft 680 disposed at a lower portion of the housing 100 and parallel to the cam shaft portion 200, A lever 1 610 and a lever 2 620 formed to extend in the direction of the lever 200 and a trip crawler 630 rotatably coupled to one side of the lever 1 610, A stopper spring support bracket 650 formed to extend from the operation shaft 680 and a stopper spring support bracket 650 extending from the operation shaft 680 and being rotatably connected to the operation shaft 680 A shutoff lever 670 provided at one end of the shutoff spring support bracket 650 with a center of the circle as a center and a shutoff spring 670 provided at the shutoff spring support bracket 650 to provide an elastic force to push the shutoff spring support bracket 650 660).

Based on the above-described configuration, the closing spring charging operation, the tripping operation, and the closing operation will be described.

The closing operation is an operation for receiving a normal normal current again in a state in which the normal current is cut off by the operation of the vacuum breaker operating unit and the emergency power source is turned on and the closing switch provided to the switch unit 400 is manually pressed, It works when the input command is dropped by the signal.

At this time, the closing spring charging operation must be performed first, and the operation of the vacuum circuit breaker operation unit will be described with reference to FIG. 8 to FIG.

When the closing spring charge operation is performed, the emergency power source is first applied to the motor 110 to rotate the eccentric gear 120. In this case, the eccentric gear 120 may be a bevel gear or a gear having a similar function. The shaft arm 130 eccentrically connected to the eccentric gear 120 moves up and down according to the rotation of the eccentric gear 120.

At this time, the elastic member 150 serves as a link for supporting the path for the up-and-down movement of the shaft arm 130.

3 is a side view of the swing arm 140. The swing arm 140 is disposed at the other end of the shaft arm 130. The swing arm 140 is a circular swing arm 140 shown in FIG. And the other end of the shaft arm 130 is hooked on the engagement surface 141 while the shaft arm 130 is moving up and down.

At this time, the shaft arm 130 pushes the engaging surface 141 to rotate the engaging member 140 stepwise in a predetermined direction, and when the engaging surface 141 is rotated, the flat surface The other end of the shaft arm 130 is engaged with the engaging surface 141 to push the swing arm 140 when the swing arm 140 rotates toward the flat surface 143, So that the carriage 140 can no longer be rotated.

The cam shaft 210 rotatably fixed to the cam 140 rotates while the cam 140 rotates in accordance with the upward and downward movement of the shaft arm 130 and the other end of the cam shaft 210 rotates The combined crank 310 is rotated. The upper end of the crank 310 is provided with the closing spring rod 330 and the other end of the closing spring rod 330 is formed with a predetermined groove H so as to reciprocate, And is in contact with the closing spring support rod 320 provided on the upper side of the operation base housing 100.

Referring to FIGS. 9A and 9B, when the crank 310 rotates along the camshaft 210, the closing spring rod 330 moves upwards about the other end coupled to the groove H, And the length of the center axis A of the crank 310 and the crank 310 is shortened.

The closing spring 340 which is provided on the outer circumferential surface of the closing spring rod 330 and interposed between the closing spring rod 330 and the closing spring rod 330 prevents the closing spring rod 330 from moving to the crank 310 and the center axis point A of the closing spring support rod 320 is shortened as the length of the center axis point A of the closing spring support rod 320 is shortened.

In this case, referring to FIG. 8, the crawler 240 and the input hook 520 are in contact with each other after the input. At this time, the closing hook 520 suppresses the elastic force that causes the compressed closing spring 340 to rotate the shaft of the crank 310 so that the crank 310 and the camshaft 210 connected thereto are stopped And supports the post-insertion crawler 240 provided on the closing hook cam 220.

The closing command is operated in the state of the compressed closing spring 340, which will be described with reference to FIG.

The moving rod 410 provided on the rear side of the switch unit 400 operates to push the input hook 520 and push the input hook 520 toward the input crawler 240 The crank 310 is rotated by the elastic force and the cam shaft 210 fixedly coupled to the crank 310 is rotated by the rotation of the crank 310. As a result, .

The input cam 230 rotates to rotate the input cam roller 640 connected to the operation shaft 680 according to the outer circumferential surface shape of the input cam 230 so that the input cam roller 640 is rotated Press down.

The shape of the loading cam 230 is formed such that the outer circumferential surface thereof is formed into an elliptical curved surface and the center axis thereof is positioned at a position offset from the center of the elliptical curved surface.

Therefore, when the input cam 230 rotates, the input cam roller 640 is pressed in accordance with the shape of the outer circumferential surface of the input cam 230, and the input cam roller 640 presses the cam shaft 210 To move in the downward direction.

At this time, the lever 2 620 to which the input cam roller 640 is coupled moves in the downward direction with respect to the camshaft 210 and rotates downward about the operation shaft 680, (670) is moved upward to actuate the shutoff part of the vacuum circuit breaker so that a normal current flows.

The operation of the shutoff lever by the shutoff lever 670 is performed by the shutoff lever 670 operated by direct contact with the shutoff base or by a link portion interposed between the shutoff lever 670 and the shutoff base The configuration of the link portion corresponds to a well-known technology, and a detailed description thereof will be omitted.

The protrusion of at least three protrusions of the trip hook 510 serves as a fixed support for restricting the rotation of the operation shaft 680 for a later shutoff operation, . This completes the closing operation.

The trip operation is to shut off the normal power supply quickly when abnormal current is generated in the general power supply. It operates when the trip switch is manually pressed or when the input command is dropped by the electric signal.

The operation of the vacuum circuit breaker operation unit according to the trip operation will now be described with reference to FIG.

The trip operation starts when the trip hook 510 is in contact with the post-trip crawler 630. Specifically, the post-trip crawler 630 is provided on the lever 1 610 formed to extend from the operation shaft 680. The post-trip crawler 630 is provided on the lever 610, (650) is in contact with the trip hook (510) while compressing the blocking spring (660).

11, the trip hook 510 which has been in contact with the post-trip crawler 630 is peeled off while rotating, and the trip hook 510, which compresses the shut-off spring 660, The breaking spring 660 is stretched due to the elastic force and the blocking spring 660 is engaged with the blocking spring 660 and is extended from the blocking spring support bracket 660 extended from the operating shaft 680. [ The operation shaft 680 is rotated in accordance with the direction in which the blocking spring support bracket 650 is moved.

At this time, the shutoff lever 670 extending downward from the operation shaft 680 moves downward to operate the shutoff unit to operate a trip operation to shut off a normal current in which an abnormal current is generated.

The operation of the shutoff lever by the shutoff lever 670 is performed by the shutoff lever 670 operated by direct contact with the shutoff base or by a link portion interposed between the shutoff lever 670 and the shutoff base The configuration of the link portion corresponds to a well-known technology, and a detailed description thereof will be omitted.

In this state, when the phenomenon of generation of the abnormal current is stopped, the first closing spring charging operation is performed again.

The embodiments of the present invention have been described above. However, the technical idea of the present invention is not limited to the illustrated embodiment, but may be embodied in various forms without departing from the technical idea of the present invention.

1 is a front view of the present invention.

2 is a rear view of the present invention.

Figure 3 is an exploded view of a shaft arm and a portion of a configuration connected thereto as a cross-sectional view for a portion of the present invention.

4 is a detailed configuration diagram of a cam shaft portion corresponding to a part of the present invention.

5 is a detailed configuration diagram of a spring part corresponding to a part of the present invention.

6 is a detailed configuration diagram of a hook portion corresponding to a part of the present invention.

7 is a detailed configuration diagram of an operating shaft portion corresponding to a part of the present invention.

8 is an exploded perspective view according to the closing spring charging operation of the present invention.

9A and 9B are detailed configuration diagrams of the spring portion according to the closing spring charging operation of the present invention.

10 is an exploded perspective view according to the closing operation of the present invention.

11 is an exploded perspective view according to the trip operation of the present invention.

Description of the Related Art

100: housing 150: elastic member

110: motor 200: cam shaft portion

120: eccentric gear 210: camshaft

130: Axial arm 220: Feed hook cam

140: lap 230: closing cam

240: Crawler after input 300: Spring portion

310: crank 320: closing spring support rod

330: closing spring rod 340: closing spring

400: Switch part 410: Moving rod

500: hook portion 510: trip hook

520: input hook 600:

610: Lever 1 620: Lever 2

630: Crawler after trip 640: Feed cam roller

650: interrupting spring supporting bracket 660: interrupting spring

670: Cutoff lever 680: Operation shaft

P: a rotatably coupled point (P) of the crank (310)

A: The center axis point (A) of the closing spring support rod (320)

H: groove formed in the closing spring rod

Claims (11)

A vacuum breaker operating base for operating a blocking base, housing; A motor provided in the housing and supplied with power from an external power source; An eccentric gear having one side coupled to the motor and rotating in the same direction as the rotation direction of the motor and eccentric on the other side; A shaft arm rotatably coupled to the eccentric gear and converting the rotational motion of the eccentric gear into an up and down movement; A cam follower provided at a lower portion of the shaft arm and rotating stepwise in a predetermined direction in accordance with a movement of the shaft arm; A cam shafts horizontally provided on a lower portion of the housing and fixed to the camshaft and rotated uniformly by rotation of the camshaft; A spring portion provided at one end of the camshaft portion and rotating the camshaft portion by an elastic force; A switch unit provided on one side of the housing and instructing an operation of a trip operation or a closing operation; An elastic member provided at a lower portion of the switch unit and interposed between the switch unit and the axial chain arm to elastically support the axial arm; A hook portion which is provided on the rear surface of the switch portion and contacts the camshaft portion and receives a tripping or closing operation from the switch portion and transmits the tripping or engaging operation to the camshaft portion; And An operating shaft portion provided at a lower portion of the housing and provided in parallel with the cam shaft portion; And a vacuum circuit breaker. The method according to claim 1, Wherein the eccentric gear is a bevel gear. The method according to claim 1, Wherein the cam follower has a constant engagement surface and a flat surface on an outer circumferential surface thereof, and the shaft arm is lifted and lowered to be detachably attached to the engagement surface to rotate the cam in a predetermined direction in a predetermined direction. The method according to claim 1, The camshaft portion is a camshaft that is horizontal with the ground and is rotatably coupled to the housing; A loading hook cam fixedly coupled to the camshaft and rotating in the same direction as the camshaft; An input cam fixedly coupled to the camshaft and rotatable in the same direction as the camshaft and detachable from the operating shaft; And A post-insertion crawler rotatably coupled to the other end of the input hook cam; And a vacuum circuit breaker. 5. The method of claim 4, Wherein the input cam is formed so that an outer circumferential surface thereof is formed into an elliptical curved surface and a center axis thereof is positioned at a position offset from a center of the elliptical curved surface. The method according to claim 1, Wherein the spring portion includes a crank having one side portion rotatably coupled to a camshaft provided on the camshaft portion and rotating in the same direction as the rotation direction of the camshaft and having an eccentric portion formed on the other side portion; A closing spring support rod provided on the upper side of the housing horizontally with the ground; A closing spring rod eccentrically connected to the crank and formed with a groove having a predetermined length at one end thereof so as to contact the closing spring support rod and to convert rotational motion of the crank into upward and downward movement along the groove; A closing spring provided on an outer circumferential surface of the closing spring rod and interposed between the closing spring rod and the closing spring support rod; Wherein the vacuum circuit breaker comprises a vacuum circuit breaker. The method according to claim 1, Wherein the switch unit comprises at least two switches. The method according to claim 1, Wherein the hook portion comprises a trip hook provided on a rear surface of the switch portion and fixed to the other end portion of the camshaft portion and receiving a trip operation from the switch portion. 9. The method of claim 8, Wherein the trip hook has at least three protrusions formed therein. The method according to claim 1, The hook portion is provided on a rear surface of the switch portion and is provided on an upper surface of the camshaft portion and is rotatably coupled to the housing to receive a closing operation from the switch portion to transmit a closing operation to the camshaft portion. Wherein the vacuum circuit breaker is a vacuum circuit breaker. The method according to claim 1, Wherein the operation shaft portion is provided at a lower portion of the housing and is provided in parallel with the camshaft portion; A lever 1 and a lever 2 formed to extend from the operating shaft in the direction of the camshaft; A post-trip crawler rotatably coupled to one side of the lever 1; An input cam roller rotatably coupled to one side of the lever 2; A blocking spring support bracket extending from the operating shaft; A shutoff lever extending from the operation shaft and having one end of the shuttle lever moving up and down with the operation shaft as the center of the circle; And A blocking spring provided on the blocking spring support bracket and providing an elastic force to push the blocking spring support bracket; Wherein the vacuum circuit breaker comprises a vacuum circuit breaker.

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