CN218160159U - Interlocking mechanism - Google Patents

Abstract

The utility model relates to a circuit breaker technical field, concretely relates to interlocking mechanism. The interlocking mechanism comprises: the interlocking assembly is assembled in a vertically sliding mode, the lower end of the interlocking assembly extends to the inner side of a gas box door of the circuit breaker, and a limiting part is formed at the upper end of the interlocking assembly; the resetting piece is used for providing an upward resetting acting force for the interlocking component; the limiting piece is assembled on the inner side surface of the gas box door; when the gas box door is closed, the limiting part limits the interlocking component to compress the resetting component downwards, the limiting part is far away from the driving shaft of the grounding mechanism, and the driving shaft of the grounding mechanism can rotate; when the gas tank door is opened, the limiting part relieves the limiting of the interlocking component, the interlocking component moves upwards under the action of the resetting part, and the limiting part locks the driving shaft. The technical problems that in the prior art, when the grounding mechanism is maintained, the grounding mechanism cannot be guaranteed to keep the grounding state unchanged, and the safety is poor are solved.

Description

Interlocking mechanism

Technical Field

The utility model relates to a circuit breaker technical field, concretely relates to interlocking mechanism.

Background

The vacuum circuit breaker is 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 prescribed time. The grounding switch is matched with the vacuum circuit breaker for use, and has the main function that after the vacuum circuit breaker is disconnected, the grounding switch grounds the high-voltage circuit of the vacuum circuit breaker, so that the safety is ensured.

For example, the document with the application number CN202023060219.0 discloses a grounding mechanism, and specifically discloses: the grounding knife comprises a grounding knife body and knife head units, wherein the knife head units are arranged corresponding to the grounding knife body, each knife head unit comprises two knife heads which are respectively a first knife head and a second knife head, the first knife head and the second knife head are respectively positioned on two circumferential sides of the grounding knife body, a driving piece drives a connecting piece and the grounding knife to synchronously swing, the grounding knife body is in contact with the first knife head or the second knife head in the knife head units, and electric connection can be formed. The first cutter head is grounded, and the second cutter head is electrically connected with a contact of the circuit breaker. When the grounding mechanism is applied to the circuit breaker, the wire outlet row of the supporting grounding knife is electrically connected with the copper bar, and the second knife head is electrically connected with the moving contact in the vacuum arc-extinguishing chamber. When the breaker is switched on, the moving contact is contacted with the fixed contact, and the grounding knife is contacted with the second knife head to form electric connection, so that the circuit can be switched on; when the breaker is opened, the moving contact and the fixed contact are separated, and the grounding knife is contacted with the first knife head, so that grounding is realized, and potential safety hazards are eliminated.

The ground mechanism in the above-mentioned application can play the effect of guaranteeing circuit breaker safety work, nevertheless if need carry out the circuit maintenance to ground mechanism, need adjust ground mechanism to the ground state earlier, also need ground mechanism to keep the ground state in the maintenance process, otherwise in case the maloperation, maintainer's personal safety will not obtain the guarantee.

SUMMERY OF THE UTILITY MODEL

In order to solve prior art, when maintaining the ground mechanism, can't ensure that ground mechanism keeps the ground state unchangeable, the poor technical problem of security, the utility model provides an interlocking gear has solved above-mentioned technical problem. The technical scheme of the utility model as follows:

an interlock mechanism for acting on a grounding mechanism of a circuit breaker, the interlock mechanism comprising:

the interlocking assembly is assembled in a vertically sliding mode, the lower end of the interlocking assembly extends to the inner side of a gas tank door of the circuit breaker, and a limiting part is formed at the upper end of the interlocking assembly;

the reset piece provides an upward reset acting force for the interlocking component;

the limiting piece is assembled on the inner side surface of the gas box door;

when the gas box door is closed, the limiting piece limits the interlocking assembly to compress the resetting piece downwards, the limiting part is far away from the driving shaft of the grounding mechanism, and the driving shaft of the grounding mechanism can rotate; when the gas tank door is opened, the limiting part relieves the limiting of the interlocking component, the interlocking component moves upwards under the action of the resetting part, and the limiting part locks the driving shaft.

According to the utility model discloses an embodiment, the upper end of interlocking subassembly still is formed with the occlusion part, works as spacing locking during the drive shaft, the occlusion part can shelter from the operation mouth of drive shaft.

According to the utility model discloses an embodiment, chain subassembly includes first interlock piece, second interlock piece and third interlock piece, the vertical extension of first interlock piece, the lower extreme of first interlock piece with the cooperation of gas tank chamber door, the second interlock piece with the third interlock piece assembly is in the upper end of first interlock piece, be provided with on the second interlock piece spacing portion, be provided with on the third interlock piece shielding portion.

According to the utility model discloses an embodiment, spacing portion includes spacing frame and spacing axle, spacing frame is fixed the tip of second interlock piece, spacing axle fixed mounting is on spacing frame, spacing axle locking the drive shaft.

According to the utility model discloses an embodiment, be equipped with the cam on ground mechanism's the drive shaft, spacing axle is supported tightly the cam is in order to lock the drive shaft.

According to the utility model discloses an embodiment still includes the mount pad, the mount pad is by fixed Assembly, chain subassembly is by sliding Assembly on the mount pad.

According to the utility model discloses an embodiment, be equipped with the connecting rod of vertical extension on the mount pad, the connecting rod is at least two, it establishes to reset the cover on the connecting rod, spacing frame sliding assembly is in on the connecting rod.

According to the utility model discloses an embodiment, be provided with spacing elongated slot on the locating part, spacing elongated slot opening is inside.

According to the utility model discloses an embodiment, the lower extreme of interlocking subassembly is provided with the gag lever post, the vertical extension of gag lever post, be formed with annular groove on the lower extreme outer peripheral face of gag lever post, the annular groove of gag lever post can reach in the spacing elongated slot.

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

1. the interlocking mechanism of the utility model, through setting up the interlocking assembly, reset piece and locating part on the gas tank door medial surface, when not needing to maintain the gas tank inside, the gas tank door is closed, the locating part on the gas tank door can limit the downward movement of the effect that the interlocking assembly overcomes the reset piece, the interlocking assembly is kept away from the drive shaft of the grounding mechanism, do not influence the drive shaft action of the grounding mechanism; when the gas tank is required to be maintained, the grounding mechanism can be set to be in a grounding state, then the door of the gas tank is opened, the limiting part is far away from the interlocking component, the interlocking component is contacted with the limiting effect of the interlocking component, the interlocking component moves upwards under the action of the reset piece, the limiting part locks the driving shaft of the grounding mechanism, the driving shaft of the grounding mechanism cannot rotate, and the grounding mechanism keeps in the grounding state. Therefore, when the door of the gas box is opened and the interior of the gas box is maintained, the interlocking assembly can automatically lock the driving shaft of the grounding mechanism, so that the grounding mechanism is kept in a grounding state, and misoperation and damage to a human body are prevented;

2. the interlocking mechanism of the utility model, the upper end of the interlocking component is also formed with a shielding part, when the limiting part locks the driving shaft, the shielding part can shield the operation opening of the driving shaft, thus, the driving shaft can not be operated, the dual function of keeping the grounding state of the grounding mechanism is realized, and the safety is high;

3. the interlocking mechanism of the utility model, through setting up the mount pad, on one hand slide the assembly of interlocking, and limited the movement direction of the interlocking assembly through the connecting rod; on the other hand, the reset piece can also be assembled on the connecting rod in a centralized way, so that the structure is simple;

4. the interlocking mechanism of the utility model has the advantages that the cam is arranged on the driving shaft of the grounding mechanism, the driving shaft can be locked by the position-limitable shaft through tightly abutting against the cam, and the locking performance is good;

5. the utility model discloses an interlocking mechanism, through set up spacing elongated slot on the locating part, interlocking assembly's lower extreme sets up the gag lever post, forms annular groove on the lower extreme outer peripheral face of gag lever post, so, the annular groove of gag lever post can stretch to in the spacing elongated slot, and then realizes the limiting displacement of gas tank chamber door to interlocking assembly.

Drawings

Fig. 1 is a schematic structural view of the interlocking mechanism of the present invention disposed in a circuit breaker;

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

FIG. 3 is a schematic view of the linkage mechanism cooperating with the grounding mechanism and the gas box door;

FIG. 4 is a schematic view of the linkage mechanism cooperating with the grounding mechanism and the gas box door;

FIG. 5 is a schematic view of the interlocking mechanism engaged with the driving shaft of the grounding mechanism;

FIG. 6 is an enlarged view of the portion B of FIG. 5;

FIG. 7 is a schematic view of the interlock assembly slidably mounted to the mounting block;

FIG. 8 is a schematic view of the structure of FIG. 7 from another perspective;

in the figure: 1-an interlock assembly; 11-a first interlock; 12-a second interlock; 13-a third interlock; 131-a shielding part; 1311-a limiting hole; 14-a limiting part; 141-a limit frame; 142-a limiting shaft; 15-a limiting rod; 151-annular groove; 2-a reset piece; 3-a limiting part; 31-a limiting long groove; 4-mounting a base; 41-a connecting rod; 5-a grounding mechanism; 51-a drive shaft; 511-cam; 52-grounding knife; 53-a first cutting head; 54-a second cutting head; 6-air box; 61-gas box door; 7-a housing; 71-a baffle; 711-an operation hole; 72-limiting column.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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 example 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 … …", "over … …", "over … …", "over", etc. may be used herein to describe the spatial positional relationship of one device or feature to another device or feature as shown 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 term "above … …" may include both orientations of "above … …" and "below … …". 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, which is applied to a circuit breaker, and when the circuit breaker normally operates and does not need electrical maintenance, the interlocking mechanism can be limited by a gas box door 61 of a gas box 6 of the circuit breaker, so that the normal operation of the circuit breaker is not affected; when the internal circuit of the circuit breaker gas box 6 needs to be maintained, the grounding mechanism 5 needs to be set to the grounding state, then the gas box door 61 of the gas box 6 is opened, the limit of the interlocking mechanism is released, the interlocking mechanism locks the grounding mechanism 5, and the grounding mechanism 5 keeps the grounding state, so that misoperation cannot occur.

The grounding mechanism 5 is assembled in the shell 7, the grounding mechanism 5 comprises a driving shaft 51, a grounding knife 52, a first knife head 53 and a second knife head 54, the driving shaft 51 is rotatably assembled, one end of the driving shaft 51 is provided with an operation opening, and a driving piece can extend into the operation opening to rotate the driving shaft 51; the grounding knife 52 is rotatably assembled on the driving shaft 51, the first knife head 53 and the second knife head 54 are respectively positioned at two sides of the grounding knife 52, the first knife head 53 can be electrically connected with a moving contact in a vacuum arc extinguishing chamber, and the second knife head 54 is grounded; the grounding switch 52 can deflect with the drive shaft 51 and communicate with the first switch head 53 or the second switch head 54.

In a preferred embodiment of the present invention, a baffle 71 is mounted on the housing 7, the baffle 71 is located at one axial side of the operation opening of the driving shaft 51, an operation hole 711 is formed in the baffle 71, the operation hole 711 faces the operation opening of the driving shaft 51, and the driving member can extend into the operation opening of the driving shaft 51 through the operation hole 711.

The interlocking mechanism comprises an interlocking component 1, a resetting component 2 and a limiting component 3, wherein the interlocking component 1 is assembled in a vertical sliding manner, the lower end of the interlocking component 1 extends to the inner side of an air box door 61 of an air box 6, the limiting component 3 is arranged on the inner side surface of the air box door 61, and the air box door 61 limits the interlocking component 1 through the limiting component 3; the upper end of the interlocking component 1 is formed with a limiting part 14, when the gas tank door 61 is opened, the limiting part 3 is far away from the lower end of the interlocking component 1, the limiting on the interlocking component 1 is released, the interlocking component 1 can slide upwards under the action of the reset piece 2, and the limiting part 14 can lock the grounding mechanism 5.

As a preferable technical solution of the present embodiment, a shielding portion 131 is further formed at the upper end of the interlocking unit 1, and when the interlocking unit 1 slides upward under the action of the reset piece 2, the stopper portion 14 locks the grounding mechanism 5, and at the same time, the shielding portion 131 can shield the operation opening of the driving shaft 51 of the grounding mechanism 5, so that the driving shaft 51 of the grounding mechanism 5 cannot be operated, and it can be further ensured that the grounding mechanism 5 is not operated by mistake.

As a preferred technical solution of this embodiment, the interlocking assembly 1 is a split structure, the interlocking assembly 1 includes a first interlocking part 11, a second interlocking part 12, and a third interlocking part 13, the first interlocking part 11 extends vertically, and a lower end of the first interlocking part 11 extends to be matched with the limiting part 3; first interlocking piece 11's upper end is fixed with second interlocking piece 12 and third interlocking piece 13, and the second is provided with spacing portion 14 in the one end of keeping away from first interlocking piece 11 of interlocking piece 12, and the one end of keeping away from first interlocking piece 11 of third interlocking piece 13 extends and has shielding portion 131.

As a preferred technical solution of this embodiment, the limiting portion 14 includes a limiting frame 141 and a limiting shaft 142, the limiting frame 141 is fixed on the second interlocking member 12, and the limiting shaft 142 is fixed on the limiting frame 141; correspondingly, in order to lock the driving shaft 51 of the grounding mechanism 5, a cam 511 may be mounted on the driving shaft 51, and the limiting shaft 142 may be slid up against the cam 511 to lock the driving shaft 51.

As a preferred embodiment of the present invention, the lower end of the first locking member 11 is engaged with the limiting member 3 through a limiting rod 15. Specifically, the limiting rod 15 is fixed to the lower end of the first locking member 11, an annular groove 151 is formed in the limiting rod 15, correspondingly, a limiting long groove 31 is formed in the limiting member 3, the limiting long groove 31 extends horizontally and has an inward opening, the annular groove 151 of the limiting rod 15 can extend into the limiting long groove 31, and the limiting member 3 can limit the interlocking component 1.

As a preferable technical solution of this embodiment, the blocking portion 131 of the third interlocking member 13 may extend between the housing 7 and the baffle 71, and the blocking portion 131 may block the operation hole 711 on the baffle 71; preferably, in order to limit the vertical sliding range of the interlocking assembly 1, a vertically extending limiting hole 1311 is further formed on the blocking portion 131, a limiting post 72 is fixed on the housing 7, and the limiting post 72 can extend into the limiting hole 1311.

Interlocking subassembly 1 and the piece 2 that resets all assemble on mount pad 4, and interlocking subassembly 1 assembles on mount pad 4 with sliding from top to bottom, and the piece 2 that resets provides ascending effort that resets for interlocking subassembly 1. Specifically, spacing portion 14 is assembled on mount pad 4 in a sliding manner, mount pad 4 is fixed assembly, is equipped with connecting rod 41 on mount pad 4, and connecting rod 41 vertically extends, and the piece that resets 2 cover is established on connecting rod 41, and spacing frame 141 is assembled on connecting rod 41 in a sliding manner, and the piece that resets 2 is located the below of spacing frame 141.

As a preferable solution of this embodiment, there may be at least two connecting rods 41, and the two connecting rods 41 are assembled on the mounting seat 4 in parallel. The return member 2 may be selected from, but not limited to, a spring.

Based on the above technical solution, the working principle of the interlocking mechanism in this embodiment is as follows: when the circuit breaker normally works and does not need to be overhauled, the gas box door 61 of the gas box 6 is closed, the limiting piece 3 on the gas box door 61 can limit the interlocking component 1 downwards, the limiting part 14 on the interlocking component 1 is far away from the cam 511 on the driving shaft 51, meanwhile, the shielding part 131 is also far away from the operating hole 711, the operating hole 711 is not shielded, and the driving shaft 51 of the grounding mechanism 5 can be driven.

When the circuit needs to be overhauled in the gas box 6, an operator can firstly actuate the driving shaft 51 of the grounding mechanism 5 to enable the grounding mechanism 5 to be in a grounding state, then the gas box door 61 is opened, the limiting part 3 on the gas box door 61 is far away from the limiting rod 15, the limiting part 3 is no longer limited to the interlocking component 1, the interlocking component 1 slides upwards under the action of the resetting component 2, the limiting part 14 on the interlocking component 1 can be tightly abutted against the cam 511 on the driving shaft 51, meanwhile, the shielding part 131 blocks the operating hole 711, and the driving part cannot extend into the driving shaft 51, so that the grounding mechanism 5 can be kept in the grounding state during overhauling.

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 acting on a circuit breaker grounding mechanism (5), the interlock mechanism comprising:

the interlocking device comprises an interlocking assembly (1), wherein the interlocking assembly (1) is assembled in a vertically sliding mode, the lower end of the interlocking assembly (1) extends to the inner side of a gas box door (61) of the circuit breaker, and a limiting part (14) is formed at the upper end of the interlocking assembly (1);

the resetting piece (2) provides an upward resetting acting force for the interlocking component (1);

the limiting piece (3) is assembled on the inner side surface of the air box door (61);

when the gas box door (61) is closed, the limiting piece (3) limits the interlocking component (1) to compress the resetting piece (2) downwards, the limiting part (14) is far away from a driving shaft (51) of the grounding mechanism (5), and the driving shaft (51) of the grounding mechanism (5) can rotate; when the gas box door (61) is opened, the limiting piece (3) releases the limiting of the interlocking component (1), the interlocking component (1) moves upwards under the action of the resetting piece (2), and the limiting part (14) locks the driving shaft (51).

2. An interlock mechanism according to claim 1, wherein the upper end of the interlock assembly (1) is further formed with a shielding portion (131), and the shielding portion (131) shields the operation opening of the drive shaft (51) when the stopper portion (14) locks the drive shaft (51).

3. The interlocking mechanism according to claim 2, wherein the interlocking assembly (1) comprises a first interlocking member (11), a second interlocking member (12) and a third interlocking member (13), the first interlocking member (11) extends vertically, the lower end of the first interlocking member (11) is matched with the gas tank door (61), the second interlocking member (12) and the third interlocking member (13) are assembled at the upper end of the first interlocking member (11), the limiting portion (14) is arranged on the second interlocking member (12), and the shielding portion (131) is arranged on the third interlocking member (13).

4. A lock mechanism according to claim 3, wherein the stopper portion (14) includes a stopper frame (141) and a stopper shaft (142), the stopper frame (141) is fixed to the end of the second interlock member (12), the stopper shaft (142) is fixedly fitted to the stopper frame (141), and the stopper shaft (142) locks the driving shaft (51).

5. A linkage mechanism according to claim 4, wherein the drive shaft (51) of the grounding mechanism (5) is provided with a cam (511), and the limiting shaft (142) abuts against the cam (511) to lock the drive shaft (51).

6. A linkage according to any one of claims 4-5, further comprising a mounting block (4), the mounting block (4) being fixedly mounted, the linkage assembly (1) being slidably mounted on the mounting block (4).

7. A linkage mechanism according to claim 6, wherein the mounting seat (4) is provided with at least two vertically extending connecting rods (41), the reset member (2) is sleeved on the connecting rods (41), and the limiting frame (141) is slidably fitted on the connecting rods (41).

8. An interlocking mechanism according to claim 1, characterized in that the limiting member (3) is provided with a limiting elongated slot (31), and the limiting elongated slot (31) is opened inwards.

9. The interlocking mechanism according to claim 8, characterized in that the lower end of the interlocking assembly (1) is provided with a limiting rod (15), the limiting rod (15) extends vertically, an annular groove (151) is formed on the outer peripheral surface of the lower end of the limiting rod (15), and the annular groove (151) of the limiting rod (15) can extend into the limiting long groove (31).

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