CN-224232549-U - Five-prevention locking device and circuit breaker

Abstract

The utility model relates to a five-prevention locking device and a circuit breaker, wherein the five-prevention locking device comprises a panel, a supporting plate, a sliding plate, a closing interlocking mechanism, a grounding opening and closing mechanism and an isolating opening and closing mechanism, wherein the panel and the supporting plate are vertically arranged in parallel, the sliding plate, the closing interlocking mechanism, the grounding opening and closing mechanism and the isolating opening and closing mechanism are arranged between the panel and the supporting plate in a sliding mode, a deflector rod is fixedly arranged on the sliding plate, a grounding interlocking hole and an isolating interlocking hole are formed in the sliding plate, a back-off platform is arranged at the top of the right end of the sliding plate, the bottom of the sliding plate is connected with a vertical lock rod, a gear groove, a grounding operation hole and an isolating operation hole are formed in the panel, the distance between the grounding interlocking hole and the isolating interlocking hole is smaller than the distance between the grounding operation hole and the isolating operation hole, and the circuit breaker is provided with the five-prevention locking device. The five-prevention locking device and the circuit breaker are simple in structure, convenient to operate, high in reliability and high in safety.

Inventors

• WU ZHENDONG
• WU JIANCHUN
• SHEN GANG

Assignees

• 江苏云峰科技股份有限公司

Dates

Publication Date

20260512

Application Date

20250331

Claims (10)

1. 1. The five-prevention locking device is characterized by comprising a panel (2) and a supporting plate (1) which are vertically arranged in parallel, a sliding plate (3) which is arranged between the panel (2) and the supporting plate (1) in a sliding way up and down, a closing interlocking mechanism (4) which is arranged on the supporting plate (1) in a rotating way and used for closing a breaker in sequence, a grounding opening and closing mechanism (5) used for grounding opening and closing, and an isolation opening and closing mechanism (6) used for isolating the opening and closing; The circuit breaker cabinet door locking device comprises a sliding plate (3), a lifting rod (31) for controlling the sliding plate (3) to move up and down, a grounding interlocking hole (32) and an isolation interlocking hole (33) which are sequentially formed in the vertical direction, a yielding platform (34) which is arranged at the top of the right end of the sliding plate (3), and a vertical locking rod (35) which is connected to the bottom of the sliding plate, wherein the yielding platform (34) is used for unlocking a closing interlocking mechanism (4) of the circuit breaker to perform circuit breaker closing operation, and the vertical locking rod (35) is matched with a fixed locking hole (7) arranged on the circuit breaker cabinet door and is used for controlling the safe opening and closing of the circuit breaker cabinet door; The panel (2) is provided with a gear groove (21) for sliding and embedding a deflector rod (31), a grounding operation hole (22) for operating grounding opening and closing and an isolation operation hole (23) for operating isolation opening and closing, wherein the gear groove (21) is sequentially provided with four gears of interlocking, grounding, isolation and vacuum from top to bottom, and the deflector rod (31) is used for sliding among different gears to unlock opening and closing operations of corresponding gears; The distance between the grounding interlocking hole (32) and the isolation interlocking hole (33) is smaller than the distance between the grounding operation hole (22) and the isolation operation hole (23), when the grounding interlocking hole (32) and the grounding operation hole (22) correspond in position, the grounding opening and closing mechanism (5) is unlocked and used for grounding opening and closing operation, and when the isolation interlocking hole (33) and the isolation operation hole (23) correspond in position, the isolation opening and closing mechanism (6) is unlocked and used for isolating opening and closing operation.
2. 2. The five-prevention locking device of claim 1 is characterized in that the locking interlocking mechanism (4) comprises an interlocking baffle (41) rotatably arranged on the supporting plate (1), a circuit breaker opening and closing indicating plate (42) connected with a circuit breaker opening and closing rotating shaft and a closing interlocking plate (43) connected with the circuit breaker closing rotating shaft, the lower end of the interlocking baffle (41) is hinged with the supporting plate (1) through a first tension spring (44), the upper end of the interlocking baffle is hinged with the circuit breaker opening and closing indicating plate (42) through a second tension spring (45), the closing interlocking plate (43) is provided with a protruding part which is in blocking fit with the lower end of the interlocking baffle (41) to lock the circuit breaker closing operation, and when the sliding plate (3) descends to a position where a release platform (34) is lower than the lower end of the interlocking baffle (41), the sliding plate is pulled by the first tension spring (44), the interlocking baffle (41) is deflected clockwise to release the rotating space of the closing interlocking plate (43), and unlocking of the circuit breaker closing operation is achieved.
3. 3. The five-prevention locking device as set forth in claim 2, wherein the corner of the evacuation platform (34) is provided with a bevel (37) for guiding the lower end of the interlocking plate (41) to deflect the interlocking plate (41).
4. 4. The five-prevention locking device as set forth in claim 2, wherein the breaker opening and closing indication board (42) is provided with an interlocking rod (46) for limiting the upward sliding of the sliding plate (3) after the breaker is closed.
5. 5. The five-prevention locking device according to claim 1 is characterized in that the grounding switching mechanism (5) comprises a grounding transmission gear (51) rotatably arranged on the supporting plate (1) and a grounding switching gear (52) connected with a grounding switching rotating shaft of the circuit breaker, the grounding transmission gear (51) is meshed with the grounding switching gear (52), a grounding operation cavity (53) for controlling rotation of the grounding transmission gear (51) is arranged on the grounding transmission gear (51), the grounding operation cavity (53) corresponds to the grounding operation hole (22) in position, an operation key is inserted into the grounding operation cavity (53) through the grounding operation hole (22), the grounding transmission gear (51) is controlled to rotate, and the grounding switching gear (52) is driven to rotate, so that grounding switching of the circuit breaker is achieved.
6. 6. The five-prevention locking device of claim 1 is characterized in that the isolation opening and closing mechanism (6) comprises an isolation transmission gear (61) rotatably arranged on the supporting plate (1) and an isolation opening and closing gear (62) connected with an isolation opening and closing rotating shaft of the circuit breaker, the isolation transmission gear (61) is meshed with the isolation opening and closing gear (62), the isolation transmission gear (61) is provided with an isolation operation cavity (63) for controlling rotation of the isolation transmission gear, the isolation operation cavity (63) corresponds to the isolation operation hole (23), an operation key is inserted into the isolation operation cavity (63) through the isolation operation hole (23), the isolation transmission gear (61) is controlled to rotate, and the isolation opening and closing gear (62) is driven to rotate, so that isolation opening and closing of the circuit breaker are achieved.
7. 7. The five-prevention locking device according to claim 1, wherein the supporting plate (1) is provided with an electromagnetic lock (8) for limiting the upward and downward movement of the sliding plate (3).
8. 8. The five-prevention locking device according to claim 1, wherein the support plate (1) and the sliding plate (3) are matched through the guide groove (11) and the guide post (12) to realize the vertical sliding of the sliding plate (3).
9. 9. The five-prevention locking device according to claim 1, wherein the supporting plate (1) is provided with a mounting column (13), and the panel (2) is fixedly arranged on the mounting column (13) through bolts.
10. 10. A circuit breaker characterized in that a five-way locking device according to any one of claims 1 to 9 is installed.

Description

Five-prevention locking device and circuit breaker Technical Field The utility model relates to a five-prevention locking device and a circuit breaker, and belongs to the technical field of electric equipment. Background The five-prevention is generally used for ensuring personal safety, has five error prevention functions for electric equipment, and is one of important measures for electric safety, and specifically comprises a circuit breaker for preventing error opening and closing, a disconnecting switch for preventing on-load opening and closing, a live interval for preventing error entering, a ground switch for preventing on-load closing, and a load feeding device for preventing the ground switch from closing. In addition, the existing five-prevention locking mechanism has the problem of being forcedly opened, is easy to cause misoperation and loses the meaning of the five-prevention lock. Therefore, there is a need for a five-prevention locking device and a circuit breaker that are simple in structure, convenient to operate, high in reliability, and high in safety. Disclosure of Invention The utility model aims to overcome the defects and provide the five-prevention locking device and the circuit breaker which have the advantages of simple structure, convenience in operation, high reliability and high safety. The purpose of the utility model is realized in the following way: A five-prevention locking device comprises a panel and a supporting plate which are vertically arranged in parallel, a sliding plate which is arranged between the panel and the supporting plate in a sliding way up and down, a closing interlocking mechanism which is arranged on the supporting plate in a rotating way and used for closing a breaker in sequence, a grounding opening and closing mechanism which is used for grounding opening and closing, and an isolation opening and closing mechanism which is used for isolating opening and closing; The device comprises a sliding plate, a grounding interlocking hole, an isolating interlocking hole, a yielding platform, a vertical locking rod, a circuit breaker closing interlocking mechanism, a circuit breaker door and a locking mechanism, wherein the sliding plate is fixedly provided with the shifting rod for controlling the sliding plate to move up and down, the grounding interlocking hole and the isolating interlocking hole are sequentially formed in the vertical direction; The panel is provided with a gear slot for sliding the embedded deflector rod, a grounding operation hole for operating the grounding opening and closing and an isolation operation hole for operating the isolation opening and closing, wherein the gear slot is sequentially provided with four gears of interlocking, grounding, isolation and vacuum from top to bottom, and the deflector rod is used for sliding among different gears to unlock the opening and closing operation of the corresponding gears; The distance between the grounding interlocking hole and the isolation interlocking hole is smaller than the distance between the grounding operation hole and the isolation operation hole, when the grounding interlocking hole corresponds to the grounding operation hole, the unlocking and grounding switching mechanism is used for grounding switching operation, and when the isolation interlocking hole corresponds to the isolation operation hole, the unlocking and isolation switching mechanism is used for isolating switching operation. The circuit breaker switching-on interlocking mechanism comprises an interlocking baffle plate, a circuit breaker switching-off indicating plate and a switching-on interlocking plate, wherein the interlocking baffle plate is rotatably arranged on a supporting plate, the circuit breaker switching-on indicating plate is connected with a circuit breaker switching-off rotating shaft, the switching-on interlocking plate is connected with the circuit breaker switching-on rotating shaft, the lower end of the interlocking baffle plate is hinged with the supporting plate through a first tension spring, the upper end of the interlocking baffle plate is hinged with the circuit breaker switching-on indicating plate through a second tension spring, the switching-on interlocking plate is provided with a protruding part which is in blocking fit with the lower end of the interlocking baffle plate to lock the switching-on operation of the circuit breaker, when the sliding plate descends to a position where a yielding platform is lower than the lower end of the interlocking baffle plate, the sliding plate is pulled by the first tension spring, the interlocking baffle plate deflects clockwise to yield a rotating space of the switching-on interlocking plate, and unlocking of the switching-on operation of the circuit breaker is achieved. Further, the corner of the evacuation platform is provided with a bevel for guiding the lower end of the interlocking baffle to deflect the interlocking baffle. Further, an interloc