Miniature circuit breaker false closing prevention device

Abstract

The invention discloses a miniature circuit breaker false closing prevention device, which belongs to the technical field of power equipment and comprises an electric operating mechanism cover, and a turbine, a pinion, a bull gear and a handle gear are sequentially mounted in the electric operating mechanism cover and are in meshing transmission with one another. A tripping push rod is installed in the electric operating mechanism cover and located on the upper right portion of the large gear, a padlock pull hook is installed at the top end of the inner side of the electric operating mechanism cover and abuts against the tripping push rod, and a jump buckle and a reset spring are installed in the electric operating mechanism cover. When the circuit breaker is switched on, the tripping push rod moves upwards and pushes the circuit breaker lock catch to be separated from the jump pin, the circuit breaker trips under the action of the reset spring, then the safety padlock is additionally arranged at the round hole in the top of the padlock pull hook, the padlock pull hook cannot be reset downwards after the padlock is used for locking, false closing of the circuit breaker is prevented, and therefore safety accidents are effectively reduced.

Description

technical field [0001] The present invention relates to the technical field of electric power equipment, and more particularly, to a device for preventing false closing of a small circuit breaker. Background technique [0002] It is known in the electrical industry that when the circuit breaker is opened for maintenance, for the safety of the maintenance personnel and to prevent the circuit breaker from closing due to the action of external force, the circuit breaker is usually equipped with an anti-incorrect closing device. [0003] At present, there are two kinds of anti-accidental closing safety devices on the market, both of which are installed on the air switch. One is to use a toggle switch device. When the toggle switch is turned to the lock position, the lock and tripping of the switch are separated. At this time, the switch is in the sliding state and the switch cannot be closed. The other is to use the pull hook method. When the pull hook is pulled up, the pull ho...

AI Technical Summary

Problems solved by technology

The other is the pull hook method. When the pull hook is pulled up, the pull hook will withstand the lock buckle, so that the lock buckle cannot be moved, so that the switch handle cannot be moved together.

[0004] There are two types of anti-missing closing devices for small circuit breakers. The disadvantage of the first method is that no padlock can be added, and it can be unlocked at will.

Although the second method can be equipped with a padlock, since the handle cannot be moved after being locked, it is easy to force the handle to damage the switch without knowing it.

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