Explosion-proof junction box

Abstract

The invention relates to an explosion-proof junction box, and the explosion-proof junction box comprises a junction box cover, a wiring terminal, a grounding terminal, a junction box seat and a wire outlet component. A box body of the junction box seat is composed of four eccentric arcs, and a cover body of the junction box cover is composed of four eccentric arcs. The four eccentric arcs of the box seat are matched with the four eccentric arcs of the box cover. The eccentric distances between the centers of the four eccentric arcs of the box seat and the center of the junction box sat are M;eccentric distances between the centers of the four eccentric arcs of the box cover and the center of the junction box cover are N. The junction box seat is connected and fastened with a wire outlet base of a motor base through a first fastening bolt. The internal space is more spacious, and the junction box has the reasonable electrical clearance, creepage distance and shell strength, is higher in protection level, greatly improves the sealing performance, is more convenient for installation and application, is high in stability, is convenient to use, is compact in structure, and is beautifulin appearance.

Description

technical field [0001] The invention relates to a junction box, in particular to an explosion-proof junction box, and belongs to the technical field of explosion-proof equipment manufacturing. Background technique [0002] The explosion-proof motor is developing rapidly, and the explosion-proof junction box is one of the most important key links of the motor, especially in the environment with hydrogen and acetylene, safety and reliability are very important. The current explosion-proof mark ExdIICT1~T4Gb junction box structure style is limited, it is only suitable for conventional low-power motors, and the internal space and safety of the junction box are greatly reduced when the external cable is increased for customers who increase the power of the prototype. Although the current explosion-proof mark ExdIIBT1 ~ T4Gb junction box space size is greatly increased, but can not be used in the explosion-proof mark ExdIICT1 ~ T4Gb explosive gas occasions, neither meet the explos...

AI Technical Summary

Problems solved by technology

The current explosion-proof mark ExdIICT1~T4Gb junction box structure style is limited, it is only suitable for conventional low-power motors, and the internal space and safety of the junction box are greatly reduced when the external cable is increased for the customer who increases the power of the prototype

Although the space size of the current explosion-proof mark ExdIIBT1~T4Gb junction box is greatly enlarged, it cannot be used in the explosion-proof mark ExdIICT1~T4Gb explosive gas occasion, neither conforms to the explosion-proof regulations, and the safety performance cannot be guaranteed.

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