Electric protection device for crane

An electrical protection device for a crane belongs to the technical field of electrics and comprises an electrical protection box, a plurality of ventilation holes are formed in the left side wall and the right side wall of the electrical protection box respectively, and a shielding mechanism is ar...

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Bibliographic Details
Main Author JIA XUEFEI
Format Patent
LanguageChinese
English
Published 25.08.2023
Subjects
FIRE-FIGHTING
HUMAN NECESSITIES
LIFE-SAVING
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Summary:An electrical protection device for a crane belongs to the technical field of electrics and comprises an electrical protection box, a plurality of ventilation holes are formed in the left side wall and the right side wall of the electrical protection box respectively, and a shielding mechanism is arranged on the outer side of the outer wall of each ventilation hole and comprises two shielding assemblies. The two shielding assemblies are arranged on the outer sides of the outer walls of the ventilation holes in the left side and the right side correspondingly. When smoke is generated in the inner cavity of the electrical protection box, induction can be carried out, and the ventilation holes in the two sides of the electrical protection box can be shielded at the same time, so that the closed environment of the inner cavity of the electrical protection box is achieved, external oxygen is prevented from entering the inner cavity of the electrical protection box through the ventilation holes to provide oxygen fo
Bibliography:Application Number: CN202320026227U