CN218447620U - Interlocking mechanism for vacuum circuit breaker - Google Patents

Abstract

The utility model relates to a circuit breaker technical field, concretely relates to interlocking gear for vacuum circuit breaker. The device comprises a valve which is vertically assembled in a sliding manner, the valve slides to open and close a driving end of a driving shaft of an isolating switch, and a first tooth is formed on the side edge of the valve; the locking piece is assembled in a horizontal sliding mode, one end of the locking piece is provided with a second tooth which can be meshed with the first tooth, and the other end of the locking piece is provided with a limiting part; the swinging piece is assembled on a main shaft of the circuit breaker in a follow-up manner, and a limiting hole is formed in the swinging piece; the elastic piece acts on the locking piece, and the limiting part of the locking piece is abutted to the side face, far away from the valve, of the swinging piece, when the circuit breaker is switched on, the swinging piece deflects to the limiting hole along with a main shaft of the circuit breaker to be aligned with the limiting part of the locking piece, the limiting part extends into the limiting hole under the action of the elastic piece, and meanwhile, the locking piece is meshed with the valve to lock the valve. The technical problem that an electric operation accident can be caused by an incorrect operation sequence of the vacuum circuit breaker during opening in the prior art is solved.

Description

Interlocking mechanism for vacuum circuit breaker

Technical Field

The utility model relates to a circuit breaker technical field, concretely relates to interlocking gear for vacuum circuit breaker.

Background

In the related art, a vacuum circuit breaker is often used, and the vacuum circuit breaker refers to a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and closing, carrying, and opening/closing a current under an abnormal circuit condition within a predetermined time. The isolating switch is mainly used for reliably isolating a part which needs power failure from a live part in the high-voltage distribution device so as to ensure the safety of maintenance work.

In the actual operation of the vacuum circuit breaker, the operation on the circuit breaker and the operation on the isolating switch have a certain sequence, and if the vacuum circuit breaker is operated to be opened, the circuit breaker is required to be operated to be opened firstly, and then the isolating switch is operated to be opened; if the vacuum circuit breaker is operated to switch on, the disconnecting switch needs to be operated to switch on first, and then the circuit breaker is operated to switch on. If the reverse sequence operation occurs, for example, under the condition that the breaker is not opened, the disconnecting switch is opened by misoperation, so that the on-load switching-on or switching-off can be caused, and a serious electrical operation accident is formed.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem that the operating sequence mistake can lead to the electrical operation accident when the vacuum circuit breaker among the prior art opens the floodgate, the utility model provides an interlocking gear for vacuum circuit breaker has solved above-mentioned technical problem. The technical scheme of the utility model as follows:

an interlock mechanism for a vacuum circuit breaker, comprising:

the valve is vertically assembled in a sliding mode, the valve slides to open and close the driving end of the driving shaft of the isolating switch, and first teeth are formed on the side edge of the valve;

the locking piece is horizontally and slidably assembled, one end of the locking piece is provided with a second tooth, the second tooth can be meshed with the first tooth, and the other end of the locking piece is provided with a limiting part;

the oscillating piece is assembled on a main shaft of the circuit breaker in a follow-up manner, and a limiting hole is formed in the oscillating piece;

the elastic piece, the elastic piece acts on the locking piece makes spacing portion of locking piece support and leans on the swing piece keep away from the side of valve, when the circuit breaker closed a floodgate, the swing piece is along with the main shaft beat of circuit breaker extremely spacing hole with the spacing portion of locking piece aims at, spacing portion stretches to under the effect of elastic piece spacing downthehole, simultaneously the locking piece with the valve meshing, the locking valve.

The utility model provides an interlocking gear, through setting up the swing piece, locking piece and valve cooperation, when the circuit breaker closes a floodgate, the swing piece aligns with the spacing portion of locking piece along with the spacing hole of circuit breaker main shaft beat to it on, then under the effect of elastic component, the locking piece slides towards the valve level, the spacing downthehole of swing piece can be stretched to the spacing portion of locking piece, the second tooth of locking piece meshes with the first tooth of valve simultaneously, the locking valve, the drive end of isolator's drive shaft is opened to the unable vertical slip of messenger's valve. After the breaker is switched on, the disconnecting switch cannot be operated, the disconnecting switch can only be operated after the breaker is switched off, and therefore when the vacuum breaker is switched off, the breaker is operated firstly, then the disconnecting switch is operated, and the occurrence of electrical operation accidents is prevented.

According to the utility model discloses an embodiment, the lock piece includes lock plate and limiting plate, the one end of lock plate with the valve meshing, the other end of lock plate with limiting plate fixed connection, be formed with on the limiting plate spacing portion, the limiting plate for the lock plate is buckled.

According to the utility model discloses an embodiment, the lock plate assembles on the mounting panel with sliding horizontally, the limiting plate is along guiding axle horizontal slip.

According to the utility model discloses an embodiment, the guiding axle is by the fixed assembly of level on the connecting plate, be formed with the slide opening on the limiting plate, the guiding axle stretches to in the slide opening.

According to the utility model discloses an embodiment, the elastic component assembly is in on the guiding axle, the both ends of elastic component act on respectively the connecting plate with the limiting plate.

According to the utility model discloses an embodiment, spacing portion is hemispherical.

According to the utility model discloses an embodiment, the drill way edge of spacing hole and spacing portion complex extends and has the conical surface that expands outward.

According to an embodiment of the present invention, the oscillating member is a sector plate member.

According to the utility model discloses an embodiment, the valve sliding assembly is on the mounting panel, the valve resets to initial position under the effect of piece that resets.

Based on the technical scheme, the utility model discloses the technological effect that can realize does:

1. the utility model discloses a chain mechanism for vacuum circuit breaker, through setting up the swing, locking piece and valve cooperation, when the circuit breaker combined floodgate, the swing aligns with the spacing portion of locking piece along with spacing hole of circuit breaker main shaft beat to it above that, then under the effect of elastic component, the locking piece is towards the valve horizontal slip, the spacing downthehole of swing can be stretched to the spacing portion of locking piece, the second tooth of locking piece and the first tooth meshing of valve simultaneously, the locking valve makes the unable vertical drive end that slides and open isolator's drive shaft of valve. Namely, after the breaker is switched on, the isolating switch cannot be operated, and only the isolating switch can be operated after the breaker is switched off, so that when the vacuum breaker is switched off, the breaker is firstly operated to switch off, and then the operation sequence of the disconnecting switch is operated to prevent the occurrence of electrical operation accidents;

2. the interlocking mechanism for the vacuum circuit breaker locks the valve in a mode of meshing the first tooth and the second tooth, and the locking effect is good; the locking piece comprises a locking plate and a limiting plate which are bent oppositely, and the locking piece can be ensured to horizontally slide and can be matched with the swinging piece and the valve; the locking plate is assembled in a horizontal sliding mode, the limiting plate horizontally slides along the guide shaft, and then the two parts of the locking piece are limited in the horizontal sliding mode, so that the motion track of the locking piece is limited, and the locking piece is accurately matched with the swinging piece and the valve;

3. the utility model discloses an interlocking gear for vacuum circuit breaker, set up spacing portion and be hemispherical, can reduce the frictional force between locating part and the swinging member; the edge of the hole opening of the limiting hole is further provided with an outward-expanding conical surface in an extending mode, when the breaker is operated to be opened, the hemispherical limiting part can easily slide out of the limiting hole through the conical surface, interference between the swinging piece and the limiting piece is not prone to being caused, and the structure is damaged.

Drawings

Fig. 1 is a schematic structural view of the interlocking mechanism of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a front view of the interlock mechanism;

FIG. 4 is a rear view of the interlock mechanism;

FIG. 5 is a schematic structural view of the shutter;

FIG. 6 is a schematic view of the latch member;

FIG. 7 is a schematic structural view of the oscillating member;

FIG. 8 is a schematic view of the mounting plate construction;

in the figure: 1-a valve; 11-a first tooth; 12-vertical long hole; 13-a handle; 14-a reset piece; 2-a lock; 21-a locking plate; 211-second tooth; 212-transverse slot; 22-limiting plate; 221-a limiting part; 222-a slide hole; 3-a swinging member; 31-a limiting hole; 311-a conical surface; 32-lightening holes; 4-an elastic member; 5, mounting a plate; 51-a through hole; 6-a main shaft; 7-a guide shaft; 71-a connecting plate; 8-assembling a plate; 9-a drive shaft; 91-a first drive shaft; 92-second drive shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of parts and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

For ease of description, spatially relative terms such as "over 8230," "upper surface," "above," and the like may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; 'above" may include both orientations "at 8230; \8230;' above 8230; 'at 8230;' below 8230;" above ". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

As shown in fig. 1 to 8, the present embodiment provides an interlocking mechanism for a vacuum circuit breaker, including a shutter 1, a locking member 2, a swinging member 3 and an elastic member 4, wherein the shutter 1 is assembled by vertical sliding, the shutter 1 is used for opening and closing a driving end of a driving shaft 9 of an isolating switch, the swinging member 3 is assembled on a main shaft 6 of the vacuum circuit breaker in a rotating manner, the locking member 2 is assembled by horizontal sliding, under the action of the elastic member 4, one end of the locking member 2 abuts against the swinging member 3, the other end of the locking member 2 is used for locking the shutter 1, the swinging member 3 controls the horizontal position of the locking member 2, when the locking member 2 slides close to the shutter 1, the locking member 2 can lock the shutter 1, and the shutter 1 cannot move vertically; when the locking piece 2 is far away from the valve 1, the locking piece 2 can release the locking of the valve 1, and the valve 1 can vertically slide.

The valve 1 is plate-shaped, the valve 1 is vertically and slidably assembled on the mounting plate 5, a vertically extending vertical long hole 12 is formed in the valve 1, and a fastener penetrates through the vertical long hole 12 to be fixed on the mounting plate 5 so as to vertically and slidably assemble the valve 1 on the mounting plate 5; the side edge of one side of the valve 1 close to the locking member is formed with a first tooth 11, and when the locking member 2 slides horizontally towards the valve 1, the locking member 2 can lock the valve 1 by meshing with the first tooth 11 on the valve 1, so that the valve 1 cannot slide vertically.

As a preferred technical solution of this embodiment, there are two vertical long holes 12, and the two vertical long holes 12 are arranged in parallel.

As a preferred technical solution of this embodiment, the shutter 1 is reset by the reset piece 14, one end of the reset piece 14 is connected to the shutter 1, the other end of the reset piece 14 is connected to the mounting plate 5, and the shutter 1 can be reset to the initial position by the reset piece 14 without external force. The reset member 14 may be selected from, but not limited to, a spring.

As a preferable technical solution of the present embodiment, in order to operate the vertical sliding motion of the shutter 1, a handle 13 is formed on the outer surface of the shutter 1. The operator can grasp the handle 13 to drive the shutter 1 to slide up and down.

As a preferable solution of the present embodiment, the first teeth 11 are vertically extending rectangular teeth.

Two through holes 51 are formed in the mounting plate 5, and the two through holes 51 are arranged corresponding to the driving shaft 9 of the isolating switch. Specifically, the driving shaft 9 includes a first driving shaft 91 and a second driving shaft 92, the first driving shaft 91 and the second driving shaft 92 are arranged side by side up and down, the first driving shaft 91 is located above the second driving shaft 92, the first driving shaft 91 and the second driving shaft 92 are in transmission connection through a gear assembly, and the first driving shaft 91 and the second driving shaft 92 are respectively arranged in alignment with the two through holes 51; when the shutter 1 is located at the initial position, the shutter 1 just blocks the two through holes 51 on the mounting plate 5, and neither the first driving shaft 91 nor the second driving shaft 92 is operable; when the shutter 1 slides downward from the initial position, the upper through hole 51 may be exposed to facilitate the operation of the first driving shaft 91; when the shutter 1 slides upward from the initial position, the lower through hole 51 may be exposed to facilitate the operation of the second driving shaft 92.

As a preferred technical solution of this embodiment, the driving shaft 9 is set to be a double-shaft structure, and the closing and grounding of the disconnecting switch can be controlled by operating different driving shafts, so as to avoid misoperation. If the first driving shaft 91 is operated to control the disconnecting switch to be switched on and off, the second driving shaft 92 is operated to control the disconnecting switch to be grounded.

The locking piece 2 is horizontally and slidably assembled on the mounting plate 5, one end of the locking piece 2 is provided with a second tooth 211, and the second tooth 211 can be meshed with the first tooth 11; the other end of the locking member 2 engages the oscillating member 3. Specifically, the locking member 2 includes a locking plate 21 and a limiting plate 22, one end of the locking plate 21 close to the shutter 1 forms the second tooth 211, the other end of the locking member 21 is fixedly connected with the limiting plate 22, a limiting portion 221 is formed on the limiting plate 22, and the limiting portion 221 abuts against the oscillating member 3.

As a preferable embodiment of the present invention, the limiting plate 22 is bent with respect to the locking plate 21 to facilitate the engagement between the locking member 2, the swinging member 3, and the shutter 1.

As a preferable technical solution of the present embodiment, the locking plate 21 is horizontally slidably fitted on the mounting plate 5, a horizontal long hole 212 is formed on the locking plate 21, and a fastener is fixed on the mounting plate 5 through the horizontal long hole 212 to achieve the horizontal sliding fitting of the locking plate 21. Preferably, the two horizontal long holes 212 are arranged horizontally.

As a preferred technical solution of the present embodiment, the limit plate 22 is horizontally guided by the guide shaft 7, specifically, the guide shaft 7 is horizontally and fixedly assembled, and the axis of the guide shaft 7 is parallel to the axis of the main shaft 6 of the circuit breaker; correspondingly, the limiting plate 22 is provided with a sliding hole 222, the guide shaft 7 passes through the sliding hole 222, and the limiting plate 22 can horizontally slide along the guide shaft 7.

As a preferable technical solution of this embodiment, the limiting portion 221 is in a hemispherical shape, so that when the limiting portion 221 abuts against the side surface of the swinging member 3 under the action of the elastic member 4, the contact area can be reduced, and the friction force can be further reduced.

The oscillating piece 3 is fitted with rotation on the main shaft 6 of the circuit breaker. The swinging piece 3 is a fan-shaped plate, a limiting hole 31 is formed in the swinging piece 3, the limiting hole 31 and the limiting part 221 of the limiting plate 22 are located in the same circumferential direction, when the swinging piece 3 swings to the state that the limiting hole 31 is aligned with the limiting part 221 of the limiting plate 22, the limiting part 221 of the limiting plate 22 can extend into the limiting hole 31 under the action of the elastic piece 4, the limiting piece 2 horizontally slides towards the valve 1 as a whole, and the limiting piece 2 can be meshed with the valve 1 to lock the valve 1.

As a preferred technical solution of this embodiment, when the circuit breaker is set to the closed state, the main shaft 6 drives the swinging member 3 to swing until the limiting hole 31 is aligned with the limiting portion 221 of the limiting plate 22, and the limiting member 2 slides to lock the shutter 1.

As a preferred technical solution of this embodiment, an outward-expanding tapered surface 311 extends from an edge of the aperture of the limiting hole 31 facing the limiting portion 221, so that the limiting portion 221 is separated from the limiting hole 31 when the circuit breaker is opened.

As a preferred solution of this embodiment, in order to reduce the weight, the swinging member 3 is further provided with lightening holes 32, and the lightening holes 32 may be fan-shaped holes.

As a preferred technical solution of this embodiment, the guide shaft 7 is fixedly assembled through the connecting plate 71, the connecting plate 71 is fixedly assembled on one side of the locking member 2 away from the shutter 1, the guide shaft 7 is fixedly assembled on the connecting plate 71, the elastic member 4 is sleeved on the guide shaft 7, and two ends of the elastic member 4 respectively act on the connecting plate 71 and the limiting plate 22. The elastic member 4 may be selected from, but not limited to, a spring.

For the convenience of assembly, the circuit breaker further comprises two assembly plates 8, the two assembly plates 8 are arranged in parallel at intervals, two ends of a main shaft 6 of the circuit breaker are rotatably assembled on the two assembly plates 8, and the connecting plate 71 is fixedly assembled on the assembly plate 8 close to the shutter 1.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (9)

1. An interlock mechanism for a vacuum circuit breaker, comprising:

the valve (1) is vertically assembled in a sliding mode, the valve (1) slides to open and close the driving end of a driving shaft (9) of the isolating switch, and first teeth (11) are formed on the side edge of the valve (1);

the locking piece (2), the locking piece (2) is assembled in a horizontal sliding mode, one end of the locking piece (2) is provided with a second tooth (211), the second tooth (211) can be meshed with the first tooth (11), and the other end of the locking piece (2) is provided with a limiting part (221);

the oscillating piece (3), the oscillating piece (3) is assembled on a main shaft (6) of the circuit breaker in a follow-up manner, and a limiting hole (31) is formed in the oscillating piece (3);

elastic component (4), elastic component (4) act on lock piece (2), make spacing portion (221) of lock piece (2) support and lean on swing piece (3) keep away from on the side of valve (1), when the circuit breaker is closed a floodgate, swing piece (3) are followed main shaft (6) beat extremely spacing hole (31) with spacing portion (221) of lock piece (2) are aimed at, spacing portion (221) are stretched under the effect of elastic component (4) in spacing hole (31), simultaneously lock piece (2) with valve (1) meshing, locking valve (1).

2. The interlocking mechanism for the vacuum circuit breaker according to claim 1, wherein the locking member (2) comprises a locking plate (21) and a limiting plate (22), one end of the locking plate (21) is engaged with the shutter (1), the other end of the locking plate (21) is fixedly connected with the limiting plate (22), the limiting plate (22) is formed with the limiting portion (221), and the limiting plate (22) is bent relative to the locking plate (21).

3. An interlock mechanism for a vacuum interrupter as defined in claim 2 wherein the locking plate (21) is horizontally slidably mounted on the mounting plate (5) and the limiting plate (22) is horizontally slidable along the guide shaft (7).

4. An interlock mechanism for a vacuum circuit breaker according to claim 3, wherein the guide shaft (7) is horizontally fixedly fitted on a connection plate (71), the stopper plate (22) is formed with a slide hole (222), and the guide shaft (7) is protruded into the slide hole (222).

5. An interlocking mechanism for vacuum circuit breakers, in accordance with claim 4, characterized in that said elastic element (4) is fitted on said guide shaft (7), the two ends of said elastic element (4) acting respectively on said connection plate (71) and on said limit plate (22).

6. An interlock mechanism for a vacuum interrupter according to any one of claims 1 to 5 wherein the stopper (221) is hemispherical.

7. An interlock mechanism for a vacuum circuit breaker according to claim 6, characterized in that the edge of the aperture of the stopper hole (31) cooperating with the stopper portion (221) is extended with a flared cone-shaped surface (311).

8. An interlock mechanism for a vacuum circuit breaker according to claim 1, characterized in that the oscillating piece (3) is a sector plate.

9. An interlock mechanism for a vacuum interrupter as defined in claim 1, characterized in that the shutter (1) is slidably mounted on a mounting plate (5), the shutter (1) being reset to the initial position by a reset member (14).

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