CN214428543U

CN214428543U - Disconnecting switch and grounding switch linkage mechanism in combined vacuum circuit breaker

Info

Publication number: CN214428543U
Application number: CN202120530223.4U
Authority: CN
Inventors: 郭桂枝; 刘春佳
Original assignee: Henan Jinglichuang Intelligent Electric Co ltd
Current assignee: Henan Jinglichuang Intelligent Electric Co ltd
Priority date: 2021-03-15
Filing date: 2021-03-15
Publication date: 2021-10-19
Anticipated expiration: 2031-03-15

Abstract

The utility model provides a linkage mechanism of an isolating switch and a grounding switch in a combined vacuum circuit breaker, which comprises an operating mechanism and a switch part which are in linkage design; the operating mechanism comprises a grounding operating shaft, an isolation operating shaft and an isolation grounding transmission shaft, wherein the grounding operating shaft, the isolation operating shaft and the isolation grounding transmission shaft are arranged in a linkage manner through a first fan-shaped groove plate, a second fan-shaped groove plate, a first transmission connecting plate, a second transmission connecting plate, a V-shaped plate and a spring; the switch part comprises a wire outlet end, an isolation static contact, a grounding static contact, a knife arm hinged with the wire outlet end, an insulation pull rod hinged with the knife arm and an isolation grounding transmission shaft, wherein a connecting plate hinged with the insulation pull rod is arranged on the isolation grounding transmission shaft. The utility model discloses can be through with isolator, earthing switch interlocking design, not only make the maintainer operation more convenient, more can satisfy "five prevent" interlocking demand, structural design is simple ingenious, and the practicality is strong.

Description

Disconnecting switch and grounding switch linkage mechanism in combined vacuum circuit breaker

Technical Field

The utility model relates to an electrical equipment technical field, concretely relates to isolator, earthing switch link gear among modular vacuum circuit breaker.

Background

The combined type vacuum circuit breaker is an electrical device integrating a vacuum circuit breaker, a disconnecting switch and a grounding switch, and has the advantages of high integration degree, installation space saving and light weight. In the existing combined type vacuum circuit breaker, the operation modes of an isolating switch and a grounding switch are respectively and independently designed, the defects of complex installation and operation and large potential safety hazard exist, and the five-prevention interlocking requirement cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the not enough of prior art, provide a isolator, earthing switch link gear among the modular vacuum circuit breaker, concrete scheme is as follows:

a linkage mechanism of an isolating switch and a grounding switch in a combined vacuum circuit breaker comprises an operating mechanism and a switch part which are in linkage design; the operating mechanism comprises a grounding operating shaft, an isolating operating shaft and an isolating grounding transmission shaft, wherein the grounding operating shaft, the isolating operating shaft and the isolating grounding transmission shaft are arranged in a linkage manner through a first fan-shaped groove plate, a second fan-shaped groove plate, a first transmission connecting plate, a second transmission connecting plate, a V-shaped plate and a spring; the switch part comprises a wire outlet end, an isolation static contact, a grounding static contact, a knife arm hinged with the wire outlet end, an insulation pull rod hinged with the knife arm and an isolation grounding transmission shaft, wherein a connecting plate hinged with the insulation pull rod is arranged on the isolation grounding transmission shaft.

Based on the above, the operating mechanism further includes three separation position limit bolts and three ground position limit bolts for the first fan-shaped groove plate, the second fan-shaped groove plate and the V-shaped plate, respectively.

Based on the above, the outlet terminal is further provided with a voltage sensor 17 for electrically connecting with the live display.

The utility model discloses relative prior art has substantive characteristics and progress, specifically speaking, the utility model has the following advantages:

1. the utility model discloses in, through set up voltage sensor on the leading-out terminal row, voltage sensor is used for electric connection to electrified display, and the electrified condition of leading-out terminal is observed to the electrified display of accessible when overhauing and maintaining, guarantees maintainer safety, avoids the accident

2. And a forced mechanical interlock is arranged between the isolating switch and the grounding switch, so that the operation of a maintainer is more convenient, and the five-prevention interlock requirement is met.

Drawings

Fig. 1 is a front view of a combined type vacuum circuit breaker in a closing state of a disconnecting switch.

Fig. 2 is a rear view of the combined vacuum circuit breaker, where the isolation stationary contact and the knife arm are closed, i.e., a closing state of the isolation switch.

Fig. 3 is a front view of the isolation grounding operation mechanism, and the state is an opening state of the isolating switch.

Fig. 4 is a rear view of the combined type vacuum circuit breaker, in which the isolating stationary contact and the knife arm are separated, i.e., an isolating switch is in an open state.

Fig. 5 is a front view of the isolation grounding operation mechanism, and the state is a closing state of the grounding switch.

Fig. 6 is a rear view of the combined vacuum circuit breaker, in which the grounding stationary contact and the knife arm are closed, i.e., a closing state of the grounding switch.

In the figure: 100. an operating mechanism; 200. a switch portion; 1. a ground operating shaft; 2. isolating the operating shaft; 3. isolating the grounding transmission shaft; 4. a first fan-shaped groove plate; 5. a second fan-shaped groove plate; 6. V-shaped plate; 7. a spring; 8. a first drive link plate; 9. a second drive link plate; 10. an isolation position limit bolt; 11. connecting a position limiting bolt; 13. a connecting plate; 14. an insulating pull rod; 15. a cutter arm; 16. isolating the static contact; 17. a voltage sensor; 18. a grounding static contact; 19. and (7) leading out the wire end.

Detailed Description

The technical solution of the present invention will be described in further detail through the following embodiments.

Examples

As shown in fig. 1-6, the present invention provides a disconnecting switch and grounding switch linkage mechanism in a combined vacuum circuit breaker, which comprises an operating mechanism 100 and a switch portion 200, which are designed in a linkage manner; the operating mechanism 100 comprises a grounding operating shaft 1, an isolation operating shaft 2 and an isolation grounding transmission shaft 3, and the operating mechanism 100 comprises a grounding operating shaft 1, an isolation operating shaft 2 and an isolation grounding transmission shaft 3 which are arranged in a linkage manner through a first fan-shaped groove plate 4, a second fan-shaped groove plate 5, a first transmission connecting plate 8, a second transmission connecting plate 9, a V-shaped plate 6 and a spring 7; the switch part 200 comprises an outlet end 19, an isolation static contact 16, a grounding static contact 18, a knife arm 15 hinged to the outlet end 19, an insulation pull rod 14 hinged to the knife arm 15, and the isolation grounding transmission shaft 3, wherein a connecting plate 13 hinged to the insulation pull rod 14 is arranged on the isolation grounding transmission shaft 3.

In order to control the operation range, the operating mechanism 100 further includes three isolation position limiting bolts 10 and three ground position limiting bolts 11 respectively corresponding to the first fan-shaped groove plate 4, the second fan-shaped groove plate 5 and the V-shaped plate 6.

In order to ensure the personal safety of the maintainers, a voltage sensor 17 for electrically connecting with the live display is further arranged at the outlet end 19.

The utility model discloses concrete theory of operation: when the disconnector is closed as shown in fig. 1 and 2, when the disconnector is open as shown in fig. 3 and 4, and when the earth connection is closed as shown in fig. 5 and 6. The implementation mode is as follows: when the disconnecting switch is in a closing state, namely the state shown in fig. 1 and 2, the isolating operation shaft 2 is rotated clockwise in the view of fig. 1 to drive the second fan-shaped grooved plate to rotate clockwise, the isolating grounding transmission shaft 3 is pulled to rotate anticlockwise through the second transmission connecting plate 9, the isolating grounding transmission shaft 3 rotates clockwise in the view of fig. 2, the cutter arm 15 is pulled away through the connecting plate 13 and the insulating pull rod 14, and the state shown in fig. 3 and 4 is shown, namely the disconnecting switch is separated; in the view of fig. 3, the first fan-shaped groove plate 4 is driven to rotate clockwise by rotating the grounding operation shaft 1 clockwise, the isolation grounding transmission shaft 3 is pulled to rotate counterclockwise by the first transmission connecting plate 8 and the V-shaped plate 6, and the isolation grounding transmission shaft 3 rotates clockwise in fig. 4, and the cutter arm 15 is driven to rotate by the connecting plate 13 and the insulating pull rod 14, so that the state shown in fig. 5 and fig. 6 is presented, that is, the power-off operation is realized, and the power-on operation is opposite.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.

Claims

1. The utility model provides a isolator, earthing switch link gear among modular vacuum circuit breaker which characterized in that: comprises an operating mechanism (100) and a switch part (200) which are designed in a linkage way; the operating mechanism (100) comprises a grounding operating shaft (1), an isolation operating shaft (2) and an isolation grounding transmission shaft (3), wherein the grounding operating shaft (1), the isolation operating shaft (2) and the isolation grounding transmission shaft (3) are arranged in a linkage manner through a first fan-shaped groove plate (4), a second fan-shaped groove plate (5), a first transmission connecting plate (8), a second transmission connecting plate (9), a V-shaped plate (6) and a spring (7); the switch part (200) comprises a wire outlet end (19), an isolation static contact (16), a grounding static contact (18), a knife arm (15) hinged with the wire outlet end (19), an insulation pull rod (14) hinged with the knife arm (15) and the isolation grounding transmission shaft (3), wherein a connecting plate (13) hinged with the insulation pull rod (14) is arranged on the isolation grounding transmission shaft (3).

2. The disconnecting switch and grounding switch linkage mechanism in a combined type vacuum circuit breaker according to claim 1, wherein: the operating mechanism (100) further comprises three separation position limiting bolts (10) and three connection position limiting bolts (11) which are respectively corresponding to the first fan-shaped groove plate (4), the second fan-shaped groove plate (5) and the V-shaped plate (6).

3. The disconnecting switch and grounding switch linkage mechanism in a combined type vacuum circuit breaker according to claim 1, wherein: the outlet end (19) is also provided with a voltage sensor (17) which is used for being electrically connected with the electrified display.