CN217387007U - Interlocking mechanism of multifunctional combined vacuum circuit breaker - Google Patents

Abstract

The utility model provides a many function combination vacuum circuit breaker's interlocking device, includes procedure lock, isolation shaft interlocking subassembly, jam plate, procedure lock even board, and the procedure lock even board can be installed at the cabinet internally with sliding from top to bottom, and with procedure lock linkage connection, all constitutes interlocking cooperation between procedure lock even board and isolation shaft interlocking subassembly, the jam plate, procedure lock even board have with isolation shaft interlocking subassembly spacing cooperation make isolator keep the separating brake at the separating brake position and with the spacing cooperation of jam plate make the jam plate keep the primary importance in latched position to and with isolation shaft interlocking subassembly, jam plate remove spacing complex secondary importance. The advantages are that: through forming foretell interlocking structure, further guarantee safe and reliable's maintenance environment, avoid the maloperation to appear the incident, guarantee electric power safety.

Description

Interlocking mechanism of multifunctional combined vacuum circuit breaker

Technical Field

The utility model relates to a many function combination vacuum circuit breaker, concretely relates to many function combination vacuum circuit breaker's interlocking device.

Background

At present, in order to ensure personal safety, high-voltage electrical equipment is required to have five anti-error functions of preventing a circuit breaker from being switched off and on by mistake, preventing an isolating switch from being switched on and off with load, preventing a grounding wire (grounding switch) from being hung (switched on) with power, preventing the grounding wire from being electrified, and preventing the grounding wire from being switched into a live interval by mistake, wherein the five anti-error functions are the most important part in power safety.

How to more effectively prevent the misoperation of the vacuum circuit breaker in the working or grounding state is an important index for ensuring the safety and reliability of the vacuum circuit breaker.

An invention patent (CN 108376628A) previously applied by the applicant discloses a multifunctional combined type vacuum circuit breaker, which can block an operation hole during grounding through the matching of a grounding shaft and a grounding interlocking plate, so as to avoid manual switching-on and switching-off operations, can avoid automatic switching-on and switching-off operations through the locking of a switching-on interlocking plate and a locking mechanism, and effectively ensures that the misoperation of switching-on and switching-off can not occur in a grounding state.

When circuit and equipment overhaul, need the outage operation, but above-mentioned many function combination formula vacuum circuit breaker avoids the maloperation though through isolator and earthing switch's mutual interlocking, in case accidentally close a floodgate electrified in the maintenance process, must lead to serious incident, consequently still has certain potential safety hazard.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of background art, the utility model provides a many function combination vacuum circuit breaker's interlocking device.

The utility model discloses the technical scheme who adopts: an interlocking mechanism of a multifunctional combined vacuum circuit breaker comprises a cabinet body, a grounding operation shaft, an isolating operation shaft and an isolating shaft;

the program lock is fixedly arranged in the cabinet body and is provided with a lock rod capable of moving up and down;

the isolation shaft linkage assembly is in linkage connection with the isolation shaft;

the lock plate is provided with an operation hole, can be installed on the cabinet body in a vertically sliding mode, and is provided with an unlocking position where the operation hole corresponds to the grounding operation shaft and the isolation operation shaft and a locking position where the operation hole is staggered with the grounding operation shaft and the isolation operation shaft;

the program lock connecting plate is arranged in the cabinet body in a vertically sliding mode and is in linkage connection with the lock rod, the program lock connecting plate, the isolation shaft linkage lock assembly and the lock plate are in interlocking fit, the program lock connecting plate is provided with a first position which is in spacing fit with the isolation shaft linkage lock assembly to enable the isolation switch to keep the disconnecting switch at the disconnecting position and in spacing fit with the lock plate to enable the lock plate to keep at the locking position, and a second position which is in spacing fit with the isolation shaft linkage lock assembly and the lock plate to be relieved.

The isolation shaft interlocking assembly comprises a crank arm fixedly installed on the isolation shaft, and a limiting shaft extends out of the crank arm.

The limiting shaft and the lock plate are both positioned below the program lock connecting plate.

The program lock connecting plate is integrally 7-shaped and comprises an upper limiting plate and a side plate, and the limiting shaft is positioned below the upper limiting plate; the locking plate is positioned below the side plate.

And a reinforcing plate is connected between the upper limiting plate and the side plate.

And the side plate is provided with a limiting column, and when the program locking plate is positioned at the first position, the limiting column is in limiting fit with the closing connecting rod.

The beneficial effects of the utility model are that: by adopting the scheme, only when the isolating switch is in the opening state, the program lock can be operated, and the program lock connecting plate is driven to move downwards; simultaneously, when the program lock even board is in the primary importance, it through with isolation shaft interlocking subassembly, spacing cooperation between the jam board, keep isolator at the separating brake position, and keep the jam board at latched position, ensure that isolator can't carry out the combined floodgate operation, only when program lock even board second place, isolator just can carry out normal operating, thereby guarantee to overhaul the in-process and can not cause the incident because of the maloperation circular telegram, further guarantee safe and reliable's maintenance environment, avoid the maloperation to appear the incident, guarantee electric power safety.

Drawings

Fig. 1 is a schematic structural diagram of a multifunctional combined vacuum circuit breaker according to an embodiment of the present invention.

Fig. 2 is a front view of the multifunctional combined vacuum circuit breaker cabinet body of the embodiment of the present invention.

Fig. 3 is a schematic structural diagram of the multifunctional combined vacuum circuit breaker cabinet body according to the embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a program lock plate according to an embodiment of the present invention.

Detailed Description

The embodiments of the present invention will be further explained with reference to the drawings:

as shown in fig. 1-3, a multifunctional combined vacuum circuit breaker includes a vacuum circuit breaking portion, a disconnecting switch, a grounding switch and an operating portion, the operating portion includes a cabinet body 1, an operating panel is disposed on the cabinet body 1, a grounding operating shaft 91 and an isolating operating shaft 92 are disposed at a position of the cabinet body 1 close to the bottom, an isolating shaft 93 is disposed at a position of the cabinet body 1 close to the top, switching between grounding closing and grounding opening of the grounding switch can be realized by rotating the grounding operating shaft 91, and switching on and closing of the disconnecting switch can be realized by rotating the isolating operating shaft 92 and matching the isolating shaft 93.

As shown in fig. 2 to 4, the interlocking mechanism of the multifunctional combined vacuum circuit breaker comprises a program lock 2, an isolation shaft interlocking assembly 3, a locking plate 4 and a program interlocking plate 5.

The program lock 2 is fixedly arranged at the upper end position of the cabinet body 1 and is provided with a lock rod 21 capable of moving up and down.

The isolating shaft interlocking assembly 3 comprises a crank arm 31 fixedly installed on an isolating shaft 93, and a limiting shaft 32 extends from the crank arm 31.

The lock plate 4 is provided with an operation hole 41, the lock plate 4 is mounted on the cabinet body 1 in a vertically sliding manner, and is provided with an unlocking position where the operation hole 41 corresponds to the grounding operation shaft 91 and the isolating operation shaft 92, and a locking position where the operation hole 41 is staggered from the grounding operation shaft 91 and the isolating operation shaft 92; when the lock is in the locking position, the lock can be locked by the padlock, so that the operation of others is prevented.

The program lock connecting plate 5 is installed in the cabinet body 1 in a vertically sliding manner, the upper end of the program lock connecting plate is in linkage connection with the lock rod 21, the program lock connecting plate can be directly fixed through screws or connected through an elastic piece, and the lock rod 21 of the program lock 2 moves vertically to realize vertical sliding of the program lock connecting plate 5.

Spacing axle 32 and jam plate 4 all are located the below of procedure lock even board 5, the concrete structure of procedure lock even board 5 is shown as figure 4, procedure lock even board 5 wholly is "7" font, including last spacing board 51 and curb plate 52, be formed with a plurality of elongated grooves on the curb plate 52 for form the cooperation of sliding with cabinet body internal frame, be connected with reinforcing plate 53 between last spacing board 51 and the curb plate 52, in order to guarantee bulk strength, stable in structure is reliable.

The limiting shaft 32 is positioned below the upper limiting plate 51; the lock plate 4 is positioned below the side plate 52, and the program lock connecting plate 5 has a first position which is in limit fit with the limit shaft 32 to keep the disconnecting switch at the opening position and is in limit fit with the lock plate 4 to keep the lock plate 4 at the locking position, and a second position which is out of limit fit with the limit shaft 32 and the lock plate 4.

When the disconnecting switch is switched on, the isolating shaft 93 can drive the limiting shaft 32 to move upwards through the connecting lever 31, so that when the disconnecting switch is at the switching-on position, the limiting shaft 32 can limit the program locking plate 5 to slide downwards, and the program locking plate can only be kept at the second position, therefore, only when the disconnecting switch is at the switching-off position, the program lock can be operated, and the program locking plate 5 is driven to move through the lock rod 21.

When operation procedure lock 2 made locking lever 21 move downwards, can drive procedure lock even board 5 synchronous gliding, at this moment, procedure lock even board 5 removes to the first position, with spacing axle 32, the spacing cooperation of jam plate 4, make isolator by the minute floodgate position of locking, jam plate 4 is locked in latched position simultaneously, avoid jam plate 4 to be opened and the maloperation, thereby guarantee to overhaul the in-process and can not cause the incident because of the maloperation circular telegram, further guarantee safe and reliable's maintenance environment, avoid the maloperation incident to appear, guarantee electric power safety.

When the program lock 2 is operated to enable the lock rod 21 to move upwards, the program lock connecting plate 5 can be driven to slide upwards synchronously, at the moment, the program lock connecting plate 5 moves to the second position and is released from limiting matching with the limiting shaft 32 and the lock plate 4, at the moment, the isolating switch can normally move, and meanwhile, the lock plate 4 can also be moved to the unlocking position, and the purpose of manual operation can be achieved.

In addition, a limit column 54 is arranged on the side plate 52, and when the program locking plate 5 is located at the first position, the limit column 54 and the closing connecting rod form limit matching at the same time, so that connection is further realized, closing action is prevented, and safety is improved.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The skilled person should understand that: although the present invention has been described in accordance with the above embodiments, the inventive concept is not limited to this embodiment, and any modification of the inventive concept will be included in the scope of the patent claims.

Claims (6)

1. An interlocking mechanism of a multifunctional combined vacuum circuit breaker comprises a cabinet body (1), a grounding operation shaft (91), an isolation operation shaft (92) and an isolation shaft (93);

the method is characterized in that: also comprises

A program lock (2) which is fixedly arranged in the cabinet body (1) and is provided with a lock rod (21) capable of moving up and down;

the isolation shaft interlocking assembly (3) is in interlocking connection with the isolation shaft (93);

the lock plate (4) is provided with an operation hole (41), the lock plate (4) is installed on the cabinet body (1) in a vertically sliding mode, and is provided with an unlocking position where the operation hole (41) corresponds to the grounding operation shaft (91) and the isolation operation shaft (92) and a locking position where the operation hole (41) is staggered from the grounding operation shaft (91) and the isolation operation shaft (92);

program lock even board (5), it can install in the cabinet body (1) with sliding from top to bottom, and it is connected with locking lever (21) linkage, all constitute interlocking cooperation between program lock even board (5) and isolation shaft interlock spare (3), locking plate (4), program lock even board (5) have with isolation shaft interlock spare (3) spacing cooperation make isolator keep separating brake at the separating brake position and with locking plate (4) spacing cooperation make locking plate (4) keep the primary importance in latched position to and with isolation shaft interlock spare (3), locking plate (4) relieve spacing complex second place.

2. The interlock mechanism of the multifunctional combined vacuum circuit breaker according to claim 1, wherein: the isolation shaft interlocking assembly (3) comprises a crank arm (31) fixedly mounted on an isolation shaft (93), and a limiting shaft (32) extends out of the crank arm (31).

3. The interlock mechanism of the multifunctional combined vacuum circuit breaker according to claim 2, wherein: the limiting shaft (32) and the lock plate (4) are both positioned below the program lock connecting plate (5).

4. The interlock mechanism of a multifunctional combined vacuum circuit breaker according to claim 2, wherein: the program lock connecting plate (5) is integrally 7-shaped and comprises an upper limiting plate (51) and a side plate (52), and the limiting shaft (32) is positioned below the upper limiting plate (51); the locking plate (4) is positioned below the side plate (52).

5. The interlock mechanism of the multifunctional combined vacuum circuit breaker according to claim 4, wherein: and a reinforcing plate (53) is connected between the upper limiting plate (51) and the side plate (52).

6. The interlock mechanism of the multifunctional combined vacuum circuit breaker according to claim 4, wherein: and a limiting column (54) is arranged on the side plate (52), and when the program locking plate (5) is positioned at the first position, the limiting column (54) is in limiting fit with the closing connecting rod.

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