Molded case circuit breaker operating mechanism buckle carrying device

Abstract

The invention relates to a molded case circuit breaker operating mechanism buckle carrying device. A stroke of the reset process of a jumping buckle is utilized for pressing a locking buckle to move, the locking buckle is driven to rotate towards the direction of the jumping buckle, and the locking buckle is separated from a draw bar; after the process of buckling carrying is finished, the jumping buckle resets upwards through pulling force of a main tension spring, the locking buckle and the jumping buckle are tightly locked together, the locking buckle is resisted by the draw bar and cannot rotate, therefore, the jumping buckle is locked and cannot continue to turn over upwards, the freedom degree of the jumping buckle is locked, a five-connecting-rod mechanism is changed into a four-connecting-rod mechanism, and the divide-shut brake function of the mechanism is restored. A design method of a traditional mechanism is overturned by ingeniously utilizing the change of rotation direction of the locking buckle and the draw bar, and an original opening contact method at a position where buckle sliding happens easily is changed into a tightly attaching method. The buckle carrying function of the mechanism is optimized, the technical processes are simplified, and reliable assembling is achieved through simple parts.

Description

technical field [0001] The invention relates to a low-voltage switchgear in power transmission and transformation equipment in public places, which is applied to a buckle mechanism of a low-voltage molded case circuit breaker. Background technique [0002] The operating mechanism is the most basic component of the entire low-voltage switchgear, and it is also the direct drive device for the circuit breaker to realize the opening and closing function. After locking, release the handle, and under the action of the tension spring, the lock and the jumper will make the lock tilt to the direction of the jumper through the force of the torsion spring acting between the locker and the drawbar, and the jumper will move upwards. The locking of the buckle surface and the buckle realizes the function of the buckle and locks the degree of freedom of the jumper. In this mechanism, the buckle and the drawbar are kept separated for a long time. In the violent vibration of the mechanism ope...

AI Technical Summary

Problems solved by technology

However, in the current technology, there are few buckle-carrying devices that can prevent the function of sliding buckle. The degree of freedom will cause the mechanism to refuse to close, resulting in the mechanism not working normally. The serious slipping phenomenon can cause the instability of the power supply system, cause a large area of ​​power outage accidents, and affect normal production. There is mandatory hard friction between the two parts, which is easy to cause deformation of the lock buckle and jump buckle, seriously wears the load buckle surface of the two parts, and reduces the mechanical life of the mechanism

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