Plug interlock device for vacuum circuit breaker

Abstract

This invention relates to a plug interlocking device for a vacuum circuit breaker, comprising: a distribution panel including a control power plug with plug fixing members formed on both sides, and a plurality of terminals; a circuit breaker body including: a control power connector for attaching and detaching the control power plug, a plug latch formed on the side of the control power connector to fix the plug fixing members, a connector rotating link linked with the plug latch to perform rotational movement, and a sliding link having one end engaged with the connector rotating link, the circuit breaker body being attached and detached from the terminals to supply voltage and current; and a transfer trolley for reciprocating the circuit breaker body along a track provided on the bottom surface inside the distribution panel, wherein a latch is formed at the other end of the sliding link, the latch being attached and detached from a track groove formed on the track.

Description

Technical Field

[0001] This invention relates to a plug interlocking device for a vacuum circuit breaker. Background Technology

[0002] Vacuum circuit breakers are devices installed in power plants and substations to cut off circuits in high-voltage power distribution lines in case of abnormal conditions such as overcurrent, short circuit, and grounding accidents, in order to protect lives and load machinery.

[0003] Figure 1 This is a perspective view of an existing vacuum circuit breaker.

[0004] Reference Figure 1 The existing vacuum circuit breaker includes: a distribution panel 100 having a control power plug 110 and a plurality of terminals 120 for supplying voltage and current; a circuit breaker body 200 having a control power connector 210 for attaching and detaching the control power plug 110, the circuit breaker body 200 being used to engage with the terminals 120 to receive voltage and current; and a transfer trolley 300 for moving the circuit breaker body 200.

[0005] The problem with this existing vacuum circuit breaker is that, in order to engage with the terminal 120, after the circuit breaker body 200 has moved and completed the engagement with the terminal 120 and supplied voltage and current, if the control power plug 110 and the control power connector 210 separate, the vacuum circuit breaker cannot operate normally, which could lead to fatal accidents or damage to the load-bearing machinery.

[0006] To address this issue, Korean Patent Publication No. 10-2011-0079231 (publication date: July 7, 2011) discloses a plug interlocking device for preventing the separation of the control power plug 110 and the control power connector 210 when, after the circuit breaker body 200 has moved to engage with the terminal 120 and supply voltage and current, the engagement with the terminal 120 is completed and voltage and current are supplied.

[0007] Figures 2 to 4 These are perspective views showing the neutral position, test position, and operating position of the aforementioned existing vacuum circuit breaker plug interlocking device.

[0008] At this time, the neutral position is the state in which the control power plug 110 and the control power connector 210 are separated, which means that the transfer trolley 300 is fixed so that the circuit breaker body 200 is separated and positioned from the terminal 120.

[0009] In addition, the test position refers to the state in which the control power plug 110 and the control power connector 210 are engaged, which means that the transfer trolley 300 is fixed so that the circuit breaker body 200 is separated and positioned from the terminal 120.

[0010] In addition, the operating position refers to the state in which the control power plug 110 and the control power connector 210 are connected, meaning that the transfer trolley 300 is in a state of supplying current and voltage after the circuit breaker body 200 and the terminal 120 have been connected.

[0011] Reference Figures 2 to 4 The control power plug 110 includes hooks 111 formed on both sides.

[0012] In addition, pin slots 211 for inserting the pin 111 and hooks 212 for opening and closing the upper side of the pin slots 211 are formed on both sides of the control power connector 210.

[0013] At this time, the hook 212 rotates around the hook hinge 214 as the central axis and is formed into an arc shape through the hook guide hole 213 to limit the rotation distance.

[0014] Additionally, one end of a connecting rod 400 is attached to the lower side of the hook 212. When the hook 212 closes the upper side of the pin groove 211, the connecting rod 400 moves downward.

[0015] Additionally, a stop 410 is attached to the other end of the connecting rod 400. The stop 410 rotates about the stop hinge 41a to insert into and disengage from the stop groove 310 formed in the track of the transfer trolley 300.

[0016] Therefore, when the plug interlocking device of the existing vacuum circuit breaker is in the neutral position, such as Figure 2 As shown, the hanging pin 111 is separated from the pin groove 211, and the stop 410 is inserted into the stop groove 310, thereby preventing the movement of the transfer trolley 300.

[0017] On the other hand, when the existing vacuum circuit breaker plug interlocking device is in the test position, such as Figure 3 As shown, as the control power plug 110 engages with the control power connector 210, the hook 111 is inserted into the pin groove 211, and the upper side of the pin groove 211 is closed by the hook 212, thereby preventing the control power plug 110 from separating from the control power connector 210.

[0018] In addition, as the connecting rod 400 moves downward, the stop 410 disengages from the stop groove 310, thereby changing the state in which the transfer trolley 300 can move.

[0019] In addition, when the existing vacuum circuit breaker plug interlocking device is in the operating position, such as Figure 4 As shown, as the control power plug 110 is engaged with the control power connector 210, the hook 111 is inserted into the pin groove 211, and the upper side of the pin groove 211 is closed by the hook 212, thereby preventing the control power plug 110 from separating from the control power connector 210.

[0020] Additionally, as the connecting rod 400 moves downward, the stop 410 disengages from the stop groove 310, and the transfer trolley 300 moves to engage the terminal 120 with the circuit breaker body 200.

[0021] However, the problem with existing plug interlocking devices for vacuum circuit breakers is that when the linkage 400 engages with one side of the control power connector 210, the control power connector 210 tilts to one side as it moves upward or downward, causing incomplete connection between the control power plug 110 and the control power connector 210 to occur frequently.

[0022] In addition, the problem with the existing plug interlocking device for vacuum circuit breakers is that, due to the assembly tolerance of the connecting rod 400, the hook 212 and the stop 410, the stop 410 often comes off the stop groove 310, which causes the transfer trolley 300 to become immobile or the connecting rod 400 itself to break. Summary of the Invention

[0023] The present invention is proposed to solve the aforementioned problems and provides a plug interlocking device for a vacuum circuit breaker, which can securely maintain the connection between the control power plug and the control power connector when the circuit breaker body moves from the test position to the operating position or during operation.

[0024] In addition, the present invention aims to provide a plug interlocking device for a vacuum circuit breaker, which can minimize the damage or malfunction of components caused by external forces or assembly tolerances of the components.

[0025] The purpose of this invention is not limited to the purposes mentioned above. Other purposes and advantages of this invention not mentioned can be understood through the following description and can be more clearly understood through embodiments of the invention.

[0026] Furthermore, it is obvious that the objects and advantages of the present invention can be achieved by means and combinations thereof shown in the claims of the patent application.

[0027] The plug interlocking device for a vacuum circuit breaker of the present invention includes: a distribution panel, comprising a control power plug having plug fixing members formed on both sides, and a plurality of terminals; a circuit breaker body, comprising a control power connector on which the control power plug is attached and detached, a plug latch formed on the side of the control power connector to fix the plug fixing members, a connector rotating link that rotates in conjunction with the plug latch, and a sliding link having one end connected to the connector rotating link, wherein the circuit breaker body is attached and detached from the terminals to receive voltage and current; and a transfer trolley for reciprocating the circuit breaker body along a track disposed on the bottom surface inside the distribution panel.

[0028] Additionally, a latch is formed at the other end of the sliding link, and the latch is attached to or detached from the track groove formed in the track.

[0029] In addition, the sliding link can rise and fall as the connector rotating link rotates.

[0030] In addition, the sliding link may also be provided with a locking magnet on one side to restrict the upward movement of the sliding link.

[0031] In addition, the rotational movement of the connector rotating link can be restricted by the connector rotating link stop contacting the arc portion formed in the plug latch.

[0032] In addition, the plug latch can rotate by separating the arc portion from the connector rotating rod stop.

[0033] According to the present invention, when the circuit breaker body of the plug interlocking device for vacuum circuit breakers moves from the test position to the operating position or during operation, safety accidents can be prevented in advance by firmly maintaining the engagement of the control power plug and the control power connector.

[0034] Furthermore, according to the present invention, by minimizing the damage and malfunction of components caused by external forces or assembly tolerances of each component, the reliability of the plug interlocking device for vacuum circuit breakers can be improved.

[0035] In addition to the effects described above, the specific effects of the present invention will be described while explaining the specific aspects of implementing the invention below. Attached Figure Description

[0036] Figure 1 This is a perspective view of a circuit breaker including a plug interlocking device for an existing vacuum circuit breaker.

[0037] Figure 2 This is a perspective view showing the neutral position of a plug interlocking device for an existing vacuum circuit breaker.

[0038] Figure 3 This is a perspective view showing the test position of an existing plug interlocking device for vacuum circuit breakers.

[0039] Figure 4 This is a perspective view showing the operating position of an existing plug interlocking device for a vacuum circuit breaker.

[0040] Figure 5 This is a perspective view showing the neutral position of a plug interlocking device for a vacuum circuit breaker according to an embodiment of the present invention.

[0041] Figure 6 This is a perspective view showing the neutral position of the main components in a plug interlocking device for a vacuum circuit breaker according to an embodiment of the present invention.

[0042] Figure 7 This is a side view showing the neutral position of the main components in a plug interlocking device for a vacuum circuit breaker according to an embodiment of the present invention.

[0043] Figure 8 This is a perspective view showing the test position of a plug interlocking device for a vacuum circuit breaker according to an embodiment of the present invention.

[0044] Figure 9 This is a perspective view showing the test positions of the main components in a plug interlocking device for a vacuum circuit breaker according to an embodiment of the present invention.

[0045] Figure 10 This is a side view showing the test positions of the main components in a plug interlocking device for a vacuum circuit breaker according to an embodiment of the present invention.

[0046] Figure 11 This is a perspective view showing the operating position of a plug interlocking device for a vacuum circuit breaker according to an embodiment of the present invention.

[0047] Figure 12 This is a perspective view showing the operating positions of the main components in a plug interlocking device for a vacuum circuit breaker according to an embodiment of the present invention.

[0048] Figure 13 This is a side view showing the operating positions of the main components in a plug interlocking device for a vacuum circuit breaker according to an embodiment of the present invention. Detailed Implementation

[0049] The above-described objects, features, and advantages will now be described in detail with reference to the accompanying drawings. Therefore, those skilled in the art can readily implement the technical concept of this invention. In the description of this invention, detailed descriptions of well-known technologies related to this invention are omitted if they are deemed likely to unnecessarily obscure the spirit of the invention. Preferred embodiments of the invention will now be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals refer to the same or similar structural elements.

[0050] In the following text, any arrangement of a component in the “upper (or lower)” or “above (or below)” of a structural element means configuring any component to contact the top (or bottom) surface of the structural element, and may also mean that other components may be sandwiched between the structural element and any components configured above (or below) the structural element.

[0051] In addition, it should be understood that if a structural element is described as being "connected", "combined", or "linked" to another structural element, then the structural elements can be directly connected or linked, or other structural elements can be "interspersed" between the various structural elements, or the various structural elements can be "connected", "combined", or "linked" through other structural elements.

[0052] The singular expressions used in this specification include plural expressions unless the context clearly specifies otherwise.

[0053] In this application, terms such as “constituting” or “comprising” should not be interpreted as meaning that all of the multiple structural elements or steps described in the specification must be included, but rather as meaning that some structural elements or steps may not be included, or additional structural elements or steps may be included.

[0054] Throughout the instruction manual, when it is “A and / or B”, unless otherwise stated, it means A, or B, or A and B; when it is “C to D”, unless otherwise stated, it means C and above and D and below.

[0055] The following will describe a plug interlocking device for a vacuum circuit breaker according to several embodiments of the present invention.

[0056] Figure 5 This is a perspective view showing the neutral position of a plug interlocking device for a vacuum circuit breaker according to an embodiment of the present invention.

[0057] in addition, Figure 6 and Figure 7 These are a perspective view and a side view showing the neutral positions of the main components in a plug interlocking device for a vacuum circuit breaker according to an embodiment of the present invention.

[0058] In the above reference numerals, the same reference numerals are given to the same components as those included in the circuit breaker of the existing vacuum circuit breaker plug interlocking device.

[0059] Reference Figure 1 and Figures 5 to 7 The plug interlocking device for vacuum circuit breakers of the present invention includes a distribution panel 100, a circuit breaker body 200, and a transfer trolley 300.

[0060] The distribution panel 100 includes a control power plug 110 formed on one side and a plurality of terminals 120 formed on the rear surface.

[0061] Additionally, the circuit breaker body 200 includes a control power connector 210 for attaching and detaching the control power plug 110, which engages with the terminal 120 to receive voltage and current.

[0062] Additionally, the circuit breaker body 200 is integrated into the transfer trolley 300. The transfer trolley 300 moves along a track 310 provided on the bottom surface inside the distribution panel 100, thereby enabling the circuit breaker body 200 to be connected to and disconnected from the terminals 120.

[0063] On the other hand, the control power plug 110 includes plug fixing members 111 formed on both sides respectively.

[0064] Additionally, the circuit breaker body 200 includes a plug latch 220, which is formed on the side of the control power connector 210 and rotates about the plug latch hinge 221. It has plug fixing member hooks 222 that respectively contact the upper side of the plug fixing member 111 to prevent the control power plug 110 from separating from the control power connector 210.

[0065] The plug latch 220 may include an arcuate portion 223 formed on the underside of the plug fixing member hook 222 and a plug latch handle 224 that allows the plug latch 220 to rotate easily.

[0066] In addition, the circuit breaker body 200 may also include a connector rotating link 230, one end of which is connected to a connector rotating link hinge 231 disposed on the lower side of the plug latch 220, and the other end is connected to a sliding link 240, rotating around the connector rotating link hinge 231.

[0067] Additionally, a connector rotation link stop 232 is formed on the connector rotation link 230, and the connector rotation link stop 232 is configured to contact or abut against the arc portion 223. The rotational movement of the connector rotation link 230 can be restricted by the connector rotation link stop 232.

[0068] On the other hand, as described above, one end of the sliding link 240 is fastened to the connector rotating link 230, and the other end is fastened to the latch 242 including the locking pin 242a.

[0069] Additionally, the track 310 includes a track groove 311, which is formed for the locking pin 242a to be inserted into or separated from it.

[0070] On the other hand, refer to Figure 1 and Figures 5 to 7 When the control power plug 110 is separated from the control power connector 210 and the transfer trolley 300 is in the neutral position where the circuit breaker body 200 is separated from the terminal 120, the state of the plug interlocking device for the vacuum circuit breaker of the present invention is described as follows.

[0071] The plug fixing member hook 222 is opened, so that the control power plug 110 can be engaged with the control power connector 210.

[0072] That is, such as Figure 7 As shown, the plug latch 220 is positioned such that when the plug fixing member 111 moves downward, it is not interfered with by the plug fixing member hook 222.

[0073] In addition, the sliding link 240 is fixed because the connector rotating link stop 232 contacts the arc portion 223, thereby restricting the rotational movement of the connector rotating link 230.

[0074] Therefore, as Figure 6 As shown, the locking pin 242a is inserted into the track groove 311 to restrict the movement of the transfer trolley 300.

[0075] on the other hand, Figure 8 This is a perspective view showing the test position of a plug interlocking device for a vacuum circuit breaker according to an embodiment of the present invention.

[0076] in addition, Figure 9 and Figure 10 These are a perspective view and a side view showing the test positions of the main components in a plug interlocking device for a vacuum circuit breaker according to an embodiment of the present invention.

[0077] Reference Figure 1 and Figures 8 to 10 When the control power plug 110 is engaged with the control power connector 210 and the transfer trolley 300 is in the test position where the circuit breaker body 200 is separated from the terminal 120, the state of the plug interlocking device for the vacuum circuit breaker of the present invention is described as follows.

[0078] As the control power plug 110 is connected to the control power connector 210, such as Figure 10 As shown, the plug latch 220 rotates to cause the plug fixing member hook 222 to engage with the plug fixing member 111, thereby preventing the control power plug 110 from detaching from the control power connector 210.

[0079] Furthermore, as the plug latch 220 rotates, the arcuate portion 223 separates from the rotating link stop 232, thereby allowing the connector rotating link 230 to rotate.

[0080] Therefore, as Figure 9 As shown, the sliding link 240 rises, causing the locking pin 242a to disengage from the track groove 311.

[0081] More specifically, as the sliding link 240 rises with the rotational movement of one end of the connector rotating link 230, it is positioned to move forward, that is, to move in the opposite direction to the direction in which the transfer trolley 300 moves toward the terminal 120.

[0082] Therefore, the locking pin 242a will disengage from the track groove 311 as it moves along the inclined portion 311a formed in the track groove 311.

[0083] Additionally, the sliding link 240 may also include an electrically operated locking magnet 241 to prevent the sliding link 240 from rising.

[0084] More specifically, the locking magnet 241 is provided with a pin (not shown) inside to insert into a hole (not shown) formed in the circuit breaker body 200, thereby preventing the sliding link 240 from rising.

[0085] This allows for a more secure connection between the control power plug 110 and the control power connector 210.

[0086] on the other hand, Figure 11 This is a perspective view showing the operating position of a plug interlocking device for a vacuum circuit breaker according to an embodiment of the present invention.

[0087] in addition, Figure 12 and Figure 13 These are a perspective view and a side view showing the operating positions of the main components in a plug interlocking device for a vacuum circuit breaker according to an embodiment of the present invention.

[0088] Reference Figure 1 and Figures 11 to 13When the control power plug 110 and the control power connector 210 are engaged, and the transfer trolley 300 is in a moving operating position so that the circuit breaker body 200 is engaged with the terminal 120, the state of the plug interlocking device for the vacuum circuit breaker of the present invention is described as follows.

[0089] As described above, when the control power plug 110 is engaged with the control power connector 210 in the test position, such as Figure 13 As shown, the plug fixing member hook 222 maintains the state in which the rotating link stop 232 rises toward the control power plug 110 by being locked in the plug fixing member 111, so that the control power plug 110 cannot be disengaged from the control power connector 210.

[0090] More specifically, the rotating linkage stop 232 prevents the plug latch 220 from rotating in a direction that would open the plug fixing member hook 222 by moving the plug fixing member 111 upward.

[0091] Therefore, by securely maintaining the connection between the control power plug 110 and the control power connector 210 when the circuit breaker body 200 moves from the test position to the operating position or during operation, safety accidents can be prevented in advance.

[0092] Additionally, in the operating position, as described above, while the sliding link 240 rises from the test position to maintain the locking pin 242a disengaged from the track groove 311, the transfer trolley 300 moves along the track 310 so that the circuit breaker body 200 can engage with the terminal 120.

[0093] By constructing as described above, the reliability of the plug interlocking device for vacuum circuit breakers can be improved by minimizing damage and malfunction of individual components caused by external forces or assembly tolerances.

[0094] As described above, although the invention has been described with reference to the accompanying drawings, the invention is not limited to the embodiments and drawings disclosed in this specification, and various modifications can be made by those skilled in the art within the scope of the technical concept of the invention.

[0095] Furthermore, in the previous description of the embodiments of the present invention, even if the effects of the configuration according to the present invention are not explicitly stated and explained, it is naturally recognized that the effects can be predicted based on the corresponding configuration.

Claims

1. A plug interlock device for a vacuum circuit breaker, in, include: A distribution panel includes: a control power plug with a plug fixing member and a plurality of terminals; The circuit breaker body includes: a control power connector for attaching and detaching the control power plug; a plug latch formed on the side of the control power connector to fix the plug fixing member; a connector rotating link that is linked with the plug latch to perform rotational movement; and a sliding link with one end connected to the connector rotating link. The circuit breaker body is attached and detached from the terminal to receive voltage and current. A transfer trolley moves the circuit breaker body back and forth along a track set on the bottom surface inside the distribution panel. A latch is formed at the other end of the sliding link, and the latch is attached to or detached from the track groove formed in the track; The plug latch has an arc portion, and the connector rotating link has a connector rotating link stop. In the neutral position, the plug latch is locked so that when the plug fixing member moves downward, it is not interfered with by the plug fixing member hook, and the arc portion presses down on the connector rotating link stop to restrict the rotational movement of the connector rotating link; At the test position, the plug fixing member hooks onto the plug fixing member, and the arc portion separates from the connector rotating link stop; In the operating position, the plug fixing member hook is engaged with the plug fixing member, and the connector rotating link stop stops one side of the plug latch adjacent to the arc portion, so that the plug latch cannot rotate in the direction that would open the plug fixing member hook in order to move the plug fixing member upward.

2. The plug interlocking device for a vacuum circuit breaker according to claim 1, wherein, The sliding link rises or falls as the connector rotating link rotates.

3. The plug interlocking device for a vacuum circuit breaker according to claim 1, wherein, The plug latch can rotate by separating from the connector rotating rod stop by the arc portion.

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