Operating mechanism and circuit breaker using the same

An operating mechanism and circuit breaker technology, which is applied to contact drive mechanisms and other directions, can solve the problems that the output torque of the drive motor cannot adapt to the three-phase circuit breaker, the increase in the manufacturing cost of the drive motor, and the increase in the quality of the transmission system by the connecting rod. The effect of reducing the size and weight of the structure, convenient layout, and reducing energy consumption

CN104134556BActive Publication Date: 2017-02-01STATE GRID CORP OF CHINA +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2017-02-01

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Abstract

The invention relates to an operating mechanism and a circuit breaker using the same. The operating mechanism comprises a left break bar transmission structure, an intermediate break bar transmission structure and a right break bar transmission structure which are respectively used for being in transmission connection with a switching-closing break bar of each phase, two adjacent break bar transmission structures are in transmission connection via an inter-phase linkage rod, at least one driving motor is arranged at the left side and the right side of the intermediate break bar transmission structure respectively, and a power output end of each driving motor is in transmission connection with the corresponding inter-phase linkage rod via corresponding cylindrical gear transmission structure respectively. By the operating mechanism for the circuit breaker, provided by the invention, purchase cost of the driving motor can be reduced, and meanwhile, the synchronism among the break bar transmission structures of all phases is improved.
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Description

technical field

[0001] The invention relates to the field of circuit breakers, in particular to an operating mechanism and a circuit breaker using the operating mechanism. Background technique

[0002] High-voltage circuit breaker is the most important switchgear in the power system. It is responsible for the dual tasks of controlling and protecting the circuit. Its performance is one of the important factors that determine whether the power system can operate safely. All the functions of the high-voltage circuit breaker are reflected in the opening and closing actions of the dynamic and static contacts. The opening and closing actions of the dynamic and static contacts are realized through the operating mechanism, which is an important part of the circuit breaker. It is a key component that determines the performance of the circuit breaker. Its performance directly affects the technical performance of the circuit breaker. Therefore, the working reliability of the circuit br...

Examples

Embodiment Construction

[0021] An example of a circuit breaker is Figure 2~3 As shown: the circuit breaker in this embodiment is an open circuit breaker, including the operating mechanism and the contact assembly 1 arranged side by side at intervals of three phases. Each contact assembly includes a static contact 3 and a branch with a moving contact 4. Closing lever 10, the operating mechanism includes a left brake lever transmission structure, a middle brake lever transmission structure and a right brake lever transmission structure respectively driving the reciprocating movement of the corresponding phase opening and closing levers, and the left, middle and right brake lever transmission structures are all The crankshaft 8 is connected by the interphase connecting rod 6 between two adjacent brake lever transmission structures. The operating mechanism also includes two drive motors 5 symmetrically arranged on the left and right sides of the middle brake lever transmission structure. The drive motors...