KR101018651B1 - Interlock device of vacuum interruptor controller - Google Patents

Abstract

The present invention to stably support the rotation of the trip hook, to enable a stable fixing of the operation unit of the vacuum circuit breaker to the outer housing, and to prevent the mechanical malfunction when fixing the operation unit of the vacuum circuit breaker to the outer housing. It is an object of the present invention to provide an interlock device of a vacuum circuit breaker operating unit which enables to operate.

Vacuum Circuit Breaker, Control Panel, Interlock, Trip Hook

Description

Interlock device of vacuum breaker control unit {INTERLOCK DEVICE OF VACUUM INTERRUPTOR CONTROLLER}

The present invention relates to an interlock device of a vacuum circuit breaker manipulator for supporting trip hooks in an operation unit of a vacuum breaker, and more particularly, to support rotation of the trip hook and to operate the control unit of the vacuum breaker to an outer housing. The present invention relates to an interlock device of a vacuum circuit breaker manipulator unit for preventing a mechanical malfunction in the case of fixing the control unit of the vacuum circuit breaker to the outer housing.

The vacuum circuit breaker, widely used in the 3.3㎸ to 38㎸ class, is the most widely used vacuum breaker in Korea and the world in the medium and high pressure system field since the late 1970s due to its excellent arc arc extinguishing ability.

The vacuum circuit breaker is largely composed of a circuit breaker and an operation unit, the circuit breaker is a device that serves to cut off electricity, the operation unit is a device to operate by applying a mechanical operation to the circuit breaker.

As a method of supplying energy to the control unit so that the breaker of the conventional vacuum circuit breaker can be operated, a closing electromagnet coil and a motor spring stored energy are used.

In case of applying coil excitation type, the coil is wrapped in bobbin to apply the voltage to generate the excitation force to generate the moving force of the driving part.The structure of the operation part of the vacuum circuit breaker is very simple, but the current value of the control voltage It is not currently used because the input is sensitive and stable mechanical properties cannot be obtained.

The electric spring operation method, which is another method, is configured to tension or compress the closing spring by using the charging motor and the worm-gear. Although the design of the vacuum circuit breaker's control part is complicated such as capacity, rotational speed, deceleration ratio of worm gears, and durability, it satisfies the characteristics of the vacuum breaker's requirement for operating voltage. Is applied to the vacuum circuit breaker control unit.

The configuration of the vacuum circuit breaker manipulator is largely composed of a charging motor, a worm-gear, an input spring, a camshaft, an operation shaft, a trip hook and an input hook, a switch section, and an interlock device.

The role of the interlock device is to fix the operation unit of the vacuum circuit breaker to the outer housing, and to prevent the malfunction of the vacuum circuit breaker when it is fixed to the external housing.

Such an interlock device is connected to the vacuum circuit breaker operating unit in a link structure, and its configuration is complicated and the number of parts frequently causes malfunction of the interlock device.

In order to solve the above problems, the present invention is to stably support the rotation of the trip hook, to enable a stable fixing of the operation unit of the vacuum circuit breaker to the external housing, and to fix the mechanical circuit breaker operation unit to the external housing It is an object of the present invention to provide an interlock device for a vacuum circuit breaker operating portion that can prevent malfunction.

The present invention to solve the above problems,

An interlock support provided on one side of the vacuum circuit breaker operating unit; A trip hook provided at the vacuum breaker control unit; A trip hook bar extending from the trip hook; An interlock rod provided in the interlock support and vertically moving in a direction perpendicular to the interlock support; A locking part provided at a lower portion of the interlock rod to fix the vacuum circuit breaker operating part to an external housing; A washer provided on the interlock rod and supporting the trip hook bar; A ground plate fixed to the interlock rod and moving in the same direction according to the vertical movement of the interlock rod; A fixed cam ground switch provided on the interlock support and detecting that the ground plate is detached according to the vertical movement of the interlock rod; An interlock handle provided perpendicular to the axial direction of the interlock rod and capable of manually moving the interlock rod up and down; A return spring provided on an outer circumferential surface of the interlock rod and provided on the interlock support to provide an elastic force to the interlock rod; And an anchoring pin provided on the interlock handle and preventing the interlock rod from being separated from the interlock supporter.

The ground plate is configured to have a “b” shape and is detached from the switch to prevent mechanical malfunction.

According to the present invention, it is possible to stably support the rotation of the trip hook, and to enable stable fixing of the operation unit of the vacuum circuit breaker to the external housing, and to prevent mechanical malfunction when the operation unit of the vacuum circuit breaker is fixed to the external housing. You can do it.

Referring to FIG. 12, the present invention relates to an interlock device 700 of a vacuum circuit breaker manipulator for supporting the trip hook 510 in the vacuum circuit breaker manipulator 10. On one side of the) is provided an interlock device 700 of the vacuum circuit breaker operating unit of the present invention.

13, in the case where the trip hook 510 is operated according to the trip operation or the closing operation, the support of the trip hook 510 and the case where the vacuum circuit breaker manipulator 10 is fixed to the external housing are shown. The role of the fixing part is the role of the interlock device 700 of the vacuum circuit breaker operating part of the present invention.

First, the vacuum circuit breaker operating unit 10 will be described in order to explain the present invention. The vacuum circuit breaker operating unit 10 is a device for operating a vacuum circuit breaker for shutting off a system when an abnormal current occurs.

The vacuum circuit breaker operating unit 10 applies mechanical power to the circuit breaker so that the system is not damaged by the abnormal current when an abnormal current occurs, and shuts off the abnormal current and simultaneously supplies emergency power so that the system can be safely operated. Let's do it.

When the phenomenon of abnormal current is stopped while the emergency power is turned on, the emergency power does not need to be turned on. Therefore, the circuit breaker of the vacuum circuit breaker is connected to apply the general current to receive the general current. It is the role of the vacuum circuit breaker operating unit 10.

1 and 2, the configuration of the vacuum circuit breaker manipulator 10 may include a housing 100, a motor provided in the housing 100, and a power supplied from an external power source. The eccentric gear 120 and the eccentric gear 120 are rotatably coupled to the eccentric gear 120 which is coupled to the 110 and rotates in the same direction as the rotational direction of the motor 110 and is formed on the other side. Axial arm 130 for converting the rotational movement of the up and down movement, is provided on the lower side of the shaft arm 130 and the car wheel 140 to rotate in a predetermined direction in accordance with the lifting and lowering movement of the chain arm 130 The camshaft 200 is horizontally provided on the lower side of the housing 100 and the door shaft 140 is fixed and rotates the same by the rotation of the door roller 140. Is provided at the end to rotate the camshaft 200 by the elastic force Spring unit 300, the switch unit 400 is provided on one surface of the housing 100 to instruct the operation of the trip operation or closing operation, the switch unit 400 is provided below the switch unit 400 and An elastic member 150 interposed between the axle arms 130 to elastically support the axle arms 130, and a rear surface of the switch part 400 and in contact with the cam shaft part 200 and in contact with the switch part. An operation provided in the lower portion of the hook portion 500 and the housing 100 to receive the trip operation or closing operation from the 400 to the cam shaft 200 and provided in parallel with the cam shaft 200 The shaft part 600 is comprised.

The eccentric gear 120 corresponds to any one of a bevel gear or a gear that operates the same.

Referring to FIG. 3, the door car 140 has a constant engaging surface 141 and a flat surface 143 formed on an outer circumferential surface thereof, and the axle arm 130 moves up and down to detach the engaging surface 141. It is characterized in that for rotating the doorcar 140 in a predetermined direction step by step.

Referring to FIG. 4 for a more detailed description, the camshaft 200 is horizontal to the ground and is cam shaft 210 that is rotatably coupled to the housing 100, and is fixedly coupled to the camshaft 210 and the camshaft ( Input hook cam 220 that rotates in the same direction as the 210, the cam cam 210 is fixedly coupled to the cam shaft 210 rotates in the same direction as the cam shaft 210 and the input cam 230 detachable from the operation shaft 600 and The feed hook cam 220 is configured to include a feed hook roller 240 that is rotatably coupled to the other end.

Here, the shape of the input cam 230 is formed so that the outer circumferential surface is formed of an elliptical curved surface and the central axis is located away from the center of the elliptic curved surface.

Referring to Figure 5 for a more detailed description of the spring 300, one side is coupled to the cam shaft 200 is rotated in the same direction as the rotational direction of the cam shaft 210 and the crank is formed on the other side 310, an input spring support rod 320 provided at an upper side of the housing 100 to be horizontal to the ground, an eccentric coupling to the crank 310, and a groove having a predetermined length is formed on the input spring support rod. The contact 320 is provided on the outer circumferential surface of the input spring rod 330 and the input spring rod 330 for converting the rotational movement of the crank 310 to the lifting and lowering motion along the groove and the input spring rod ( 330 and the closing spring support rod 320 is configured to include a closing spring 340 interposed.

The switch unit 400 is configured to include at least two switches.

Referring to FIG. 6, the hook part 500 is provided at the rear side of the switch part 400, is fixedly coupled to the other end of the cam shaft part 200, and receives a trip operation from the switch part 400. It is configured to include a hook 510, the trip hook 510 is formed with at least three protrusions.

And the hook portion 500 is provided on the rear surface of the switch unit 400 and is provided on the upper surface of the cam shaft 200, rotatably coupled to the housing 100 from the switch unit 400 It is configured to include an input hook 520 for receiving the input operation to transfer the input operation to the cam shaft 200.

Referring to FIG. 7, the operation shaft part 600 is provided at a lower side of the housing 100 and is provided in parallel with the cam shaft part 200, and a cam shaft part from the operation shaft 680. Lever 1 610 and lever 2 620 extending in the direction (200), the trip hook roller 630 is rotatably coupled to one side of the lever 1 610, the lever 2 (620) Input cam roller 640 is rotatably coupled to one side, the blocking spring support bracket 650 is formed to extend from the operating shaft 680, is formed extending from the operating shaft 680 and the operation shaft 680 A blocking spring for providing a resilient force that is provided on the blocking lever 670 and the blocking spring support bracket 650 for one side end of the lifting and lowering movement with the center of the circle and pushing the blocking spring support bracket 650. 660).

Based on the above 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 current again when the normal current is cut off by the operation of the vacuum circuit breaker manipulator 10 and the emergency power is turned on, and the input switch provided in the switch unit 400 is manually operated. Activated when pressed or the input command is dropped by electrical signal.

At this time, the closing spring charging operation should be preceded first, and thus the operation of the vacuum circuit breaker manipulator 10 will be described with reference to FIGS. 8 to 9.

When the closing spring charging operation is executed, emergency power is first applied to the motor 110 to rotate the eccentric gear 120. In this case, the eccentric gear 120 is a bevel gear or a gear having a similar operation is sufficient. The axle arm 130 coupled to the eccentric gear 120 eccentrically moves up and down with the path fixed according to the rotation of the eccentric gear 120.

At this time, the elastic member 150 serves as a link supporting the path for the lifting motion of the shaft arm 130.

The door car 140 provided at the other end of the axle arm 130 is a door car 140 disclosed in FIG. 3 as described above, and is fixed on an outer circumferential surface thereof so that the axle arm 130 can rotate the door car 140. A locking surface 141 and a flat surface 143 are formed, and the other end of the shaft arm 130 is caught by the locking surface 141 while the shaft arm 130 moves up and down.

At this time, the axle arm 130 pushes the locking surface 141 to rotate the door car 140 stepwise in a predetermined direction, the flat surface formed in the door car 140 while the locking surface 141 is rotated ( When the door 140 rotates toward the side 143 and the door 140 reaches the flat surface 143, the other end portion of the axle arm 130 pushes the door 140 at the other end. ) Will not be able to rotate the doorcar 140 anymore.

On the other hand, while the door car 140 rotates according to the lifting and lowering motion of the axle arm 130, the cam shaft 210 fixedly coupled to the door car 140 is rotated, the other end of the cam shaft 210 The crank 310 is coupled to rotate. The top surface of the crank 310 is provided with the injection spring rod 330, the other end of the injection spring rod 330 is formed with a constant groove (H) to enable the reciprocating movement, the groove is operated vacuum breaker The base 10 is in contact with the closing spring supporting rod 320 provided at the upper portion of the housing 100.

At this time, when the crank 310 is rotated along the cam shaft 210 with reference to FIGS. 9A and 9B the injection spring rod 330 is moved upward with respect to the other end coupled to the groove (H). The length of the central axis point A of the rotatably coupled point P of the crank 310 and the input spring support rod 320 is shortened.

At this time, the input spring 340 is provided on the outer circumferential surface of the input spring rod 330 and interposed between the input spring rod 330 and the input spring rod 330 so that the input spring rod 330 is the crank ( As the length of the rotatably coupled point P of 310 and the central axis point A of the input spring support rod 320 becomes shorter, it is compressed.

In this case, referring to FIG. 8, the feed post crawler 240 and the feed hook 520 are in contact with each other. At this time, the closing hook 520 is to suppress the elastic force to the compressed closing spring 340 to rotate the crank 310 shaft, so that the crank 310 and the cam shaft 210 connected thereto is in a stopped state Supports the feed post crawler 240 provided in the feed hook cam 220.

The closing command operates in the compressed closing spring 340, which will be described with reference to FIG.

When the input command is operated, first, the moving rod 410 provided on the rear side of the switch unit 400 operates to push out the input hook 520 and contact the input hook 520. ) Is peeled off and the injection spring 340 that is compressed is released from restraint by the injection hook 520 so that the crank 310 rotates by elastic force, and the cam shaft 210 fixed thereto is rotated. Done.

As a result, the feeding cam 230 is rotated to rotate the feeding cam roller 640 connected to the operation shaft 680 according to the outer circumferential surface shape of the feeding cam 230 to rotate the feeding cam roller 640. Press down.

The shape of the input cam 230 is formed so that the outer circumferential surface is formed of an elliptical curved surface and the central axis is located away from the center of the elliptic curved surface.

Accordingly, when the input cam 230 rotates, the input cam roller 640 which is in contact with each other according to the shape of the outer circumferential surface of the input cam 230 is pressed, and the input cam roller 640 is based on the cam shaft 210. Will move in the downward direction.

In this case, the lever 2 620 to which the input cam roller 640 is coupled moves in the downward direction with respect to the cam shaft 210, and rotates downwardly around the manipulation shaft 680 while the blocking lever. 670 is moved upward to operate the circuit breaker of the vacuum circuit breaker so that the general current flows.

The breaker part by the blocking lever 670 may be operated by the blocking lever 670 in direct contact with the breaker part or by a link part interposed between the blocking lever 670 and the breaker part. The configuration of the link unit may correspond to a known technology, and thus a detailed description thereof will be omitted.

In addition, the protrusion of any one of at least three protrusions of the trip hook 510 serves as a fixed support for suppressing rotation of the operation shaft 680 for a blocking operation occurring later. You will encounter This completes the closing operation.

The trip operation is to cut off the general power quickly when abnormal current occurs in the general power. It operates when the trip switch is manually pressed or the input command is dropped by an electrical signal.

At this time, the operation of the vacuum circuit breaker operating unit 10 according to the trip operation will be described with reference to FIG. 11.

The trip operation starts when the trip hook 510 is in contact with the trip hook roller 630. Specifically, the trip hook roller 630 is configured to be provided on the lever 1 610 which is formed to extend to the operation shaft 680, and the blocking spring support bracket is formed to extend to the operation shaft 680. 650 is in contact with the trip hook 510 while compressing the blocking spring 660.

Looking at the execution of the trip operation with reference to Figure 11, the trip hook 510 which was in contact with the trip hook roller 630 is peeled off while rotating and the trip hook 510 to compress the blocking spring 660. The restraint on the trip hook roller 630 is released so that the blocking spring 660 is extended by the elastic force, the blocking spring support bracket is coupled to the blocking spring 660 and extended to the operation shaft 680 650 is rotated, the operation shaft 680 is rotated according to the direction in which the blocking spring support bracket 650 moves.

At this time, the blocking lever 670, which extends to the operation shaft 680, moves downward to operate the breaker unit to operate a trip operation to cut off a general current in which an abnormal current is generated.

The breaker part by the blocking lever 670 may be operated by the blocking lever 670 in direct contact with the breaker part or by a link part interposed between the blocking lever 670 and the breaker part. The configuration of the link unit may correspond to a known technology, and thus a detailed description thereof will be omitted.

In this state, when the phenomenon in which the abnormal current is generated is stopped, it leads to the first closing spring charging operation.

FIG. 12 shows a constituent part of the present invention, and the present invention is an interlock device 700 of a vacuum circuit breaker manipulator configured at one side of the vacuum circuit breaker manipulator 10.

Hereinafter, referring to FIG. 13, a detailed configuration of the present invention includes an interlock support 790 provided at one side of the vacuum circuit breaker operating unit 10, a trip hook 510 provided at the vacuum circuit breaker operating unit 10. A trip hook 512 bar extending from the trip hook 510, an interlock rod 710 provided in the interlock support 790 and vertically moving in a direction perpendicular to the interlock support 790, and the interlock It is provided on the lower portion of the rod 710 and the engaging portion 720 for fixing the vacuum circuit breaker manipulator 10 to the outer housing, the upper portion of the interlock rod 710 and to support the trip hook bar 512 A washer 730, which is fixed to the interlock rod 710 and is provided on the ground plate 740, the interlock support 790 that moves in the same direction according to the vertical movement of the interlock rod 710, the interlock rod ( 710 according to the vertical movement of the ground Fixed cam ground switch 750 for detecting that the plate 740 is detached, the interlock handle 760 is provided perpendicular to the axial direction of the interlock rod 710 to manually move the interlock rod 710 up and down 760. And a return spring 770 and an interlock handle 760 which are provided on an outer circumferential surface of the interlock rod 710 and are provided on the interlock support 790 to provide an elastic force to the interlock rod. The fixing pin 780 is configured to prevent the departure from the interlock support 790.

In addition, the ground plate is formed of a "b" shape and is detached from the switch is characterized in that to prevent mechanical malfunction.

Referring to the operation of the present invention based on the attached FIG. 13, first, the trip hook 510 is provided on one side of the vacuum circuit breaker manipulator 10 and the trip hook 510 operates the vacuum circuit breaker. It is rotatably coupled to the camshaft 210 provided through the base 10.

The trip hook 510 is rotated in the same direction according to the rotation of the cam shaft 210, and rotates clockwise or counterclockwise.

When the trip hook 510 rotates in the clockwise direction, the trip hook bar 512 extending from the trip hook 510 contacts the washer 730 provided on the interlock rod 710. The washer 730 supports the trip hook 510 so that the trip hook 510 no longer rotates clockwise.

On the other hand, when the trip operation is described an embodiment of the operation of the present invention, the above-described trip operation is performed by the operation of the electrical signal or the switch unit 400 in this case the trip hook 510 is Rotate counterclockwise.

At this time, the present invention is operated when the operation by the electrical signal or the switch unit 400 is impossible.

Specifically, when the interlock handle 760 is pushed upward by the hand, the interlock rod 710 is lifted upward, and the washer 730 provided on the interlock rod 710 is the trip hook bar. Will raise 512.

At this time, the trip hook 510 is rotated counterclockwise around the camshaft 210 to perform a trip operation.

According to another embodiment of the present invention, the vacuum circuit breaker manipulator 10 is a device which can be fixed to an external housing (not shown), and in this case, the engaging portion 720 of the interlock device 700 of the vacuum breaker manipulator. ) Serves to be fixed to the outer housing.

In detail, the locking unit 720 is in a state where the locking unit 720 is also moved upward by holding the interlock handle 760 by hand and lifting upward.

At this time, when the vacuum circuit breaker manipulator 10 is coupled to an outer housing and the restraint of the interlock handle 760 is released, the interlock rod 710 and the engaging portion coupled thereto by the elastic force of the return spring 770. 720 is moved downward.

In this case, the locking portion 720 is coupled to a groove or groove (not shown) formed in the outer housing to fix the vacuum circuit breaker manipulator 10 to the outer housing.

On the other hand, when the interlock handle 760 is raised by the hand to lift upwards, mechanical malfunction may occur except for the trip operation. In this case, the fixed cam ground switch 750 provided in the interlock support 790 is It prevents malfunction.

Specifically, when the interlock handle 760 is lifted in the upward direction, the ground plate 740 is provided on the interlock rod 710 and moves in the same direction according to the vertical movement of the interlock rod 710. A state is separated from the fixed cam ground switch 750.

In this case, the fixed cam ground switch 750 is detached from the button (B) provided on the upper surface of the fixed cam ground switch 750 when the ground plate 740 is separated. By detecting and sending an electrical signal to the operation unit 400 of the vacuum circuit breaker to prevent the malfunction by fixing the entire system in a predetermined state except the trip operation.

In addition, the ground plate 740 is a "b" shape or provided on one side of the interlock rod 710 is detached from the fixed cam ground switch 750, if the shape that can press the button (B) do.

Although the preferred embodiments of the present invention have been described above, the technical idea of the present invention is not limited to the described embodiments, and various embodiments may be implemented without departing from the technical idea of the present invention.

1 is a front view of a vacuum circuit breaker operating unit.

2 is a rear view of the vacuum circuit breaker operating unit.

3 is a cross-sectional view of a portion of the vacuum breaker manipulator portion and is an exploded view of the axle arm and a portion of the configuration connected thereto.

4 is a detailed configuration diagram of the camshaft portion of the vacuum circuit breaker operating portion.

5 is a detailed configuration diagram of the spring portion of the vacuum circuit breaker operating unit.

6 is a detailed configuration diagram of the hook portion of the vacuum circuit breaker operating unit.

7 is a detailed configuration diagram of an operation shaft of a vacuum circuit breaker operating unit.

8 is an exploded perspective view of the two-ring charging operation of the vacuum circuit breaker operating unit.

9A and 9B are detailed configuration diagrams of the spring unit according to the closing spring charging operation of the vacuum circuit breaker operating unit.

10 is an exploded perspective view according to the closing operation of the vacuum circuit breaker operating unit.

11 is an exploded perspective view illustrating a trip operation of a vacuum circuit breaker operating unit.

12 is a front view of a vacuum circuit breaker operating unit including the present invention, and the portion indicated by the dotted line of FIG. 1 is the present invention.

13 is a perspective view showing a detailed configuration of the present invention.

<Explanation of symbols for the main parts of the drawings>

100 housing 150 elastic member

110: motor 200: camshaft portion

120: eccentric gear 210: camshaft

130: shaft rock 220: input hook cam

140: door car 230: input cam

240: Post-loaded roller 300: Spring part

310: crank 320: closing spring support rod

330: closing spring rod 340: closing spring

400: switch 410: moving rod

500: hook portion 510: trip hook

520: hook hook 600: control shaft

610: Lever 1 620: Lever 2

630: trip hook roller 640: feed cam roller

650: blocking spring support bracket 660: blocking spring

670: blocking lever 680: control shaft

790: interlock support 710: interlock rod

720: locking portion 730: washer

740: ground plate 750: fixed cam ground switch

B: Button 760: Interlock Handle

770: return spring 780: fixed pin

510: trip hook 512: trip hook bar

10: vacuum breaker control unit

P: Rotationally coupled point P of the crank 310

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

H: Groove formed in the closing spring rod

Claims (2)

An interlock support provided on one side of the vacuum circuit breaker operating unit; A trip hook provided at the vacuum breaker control unit; A trip hook bar extending from the trip hook; An interlock rod provided in the interlock support and vertically moving in a direction perpendicular to the interlock support; A locking part provided at a lower portion of the interlock rod to fix the vacuum circuit breaker operating part to an external housing; A washer provided on the interlock rod and supporting the trip hook bar; A ground plate fixed to the interlock rod and moving in the same direction according to the vertical movement of the interlock rod; A fixed cam ground switch provided on the interlock support and detecting that the ground plate is detached according to the vertical movement of the interlock rod; An interlock handle provided perpendicular to the axial direction of the interlock rod and capable of manually moving the interlock rod up and down; A return spring provided on an outer circumferential surface of the interlock rod and provided on the interlock support to provide an elastic force to the interlock rod; And A fixing pin provided on the interlock handle and preventing the interlock rod from being separated from the interlock supporter; Interlock device for a vacuum circuit breaker operation unit configured to include. The method of claim 1, The ground plate is formed of a "b" shape interlock device of the vacuum circuit breaker control unit, characterized in that the switch is detached from the switch to prevent mechanical malfunction.

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