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Mechanical interlock device of explosion-proof control box

A technology of interlocking device and control box, which is applied in the direction of electrical components, electrical switches, circuits, etc., can solve problems such as inability to energize

Inactive Publication Date: 2013-01-09
SHANDONG HUADUN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a set of mechanical interlocking device for the explosion-proof control box to ensure that the cover cannot be opened when the power is turned on, and the power cannot be turned on when the cover is opened

Method used

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  • Mechanical interlock device of explosion-proof control box
  • Mechanical interlock device of explosion-proof control box
  • Mechanical interlock device of explosion-proof control box

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Embodiment Construction

[0028] The present invention will be further illustrated in a non-limiting manner below in conjunction with the accompanying drawings and examples.

[0029] like figure 1 As shown, it is an embodiment of the explosion-proof control box mechanical interlock device of the present invention. The explosion-proof control box mechanical interlock device of this embodiment includes: a lock shaft 3 slidably arranged on the explosion-proof control box door panel 1, the lock shaft 3 has a connecting end and a free end, the connecting end is movably connected with the main switch 7 arranged on the door panel 1 of the explosion-proof control box; The first side wall is hingedly connected by a hinge 6. When the protective frame 2 is closed, the surrounding frame edges will cover the fastening bolts 10 around the explosion-proof control box door panel 1; device, the locking device includes an elastic lock assembly 8 and a press lock assembly 9, wherein the elastic lock assembly 8 is fixedl...

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Abstract

The invention discloses a mechanical interlock device of an explosion-proof control box, which comprises a lock shaft flexibly connected with a master switch on a door sheet of the explosion-proof control box, a protection frame hinged with a first side wall of the door sheet of the explosion-proof control box and a locking device arranged close to the free end of the lock shaft, wherein the locking device comprises an elastic lock catch component fixedly arranged on a second side wall of the door sheet of the explosion-proof control box and a press-locking component fixedly arranged on a second frame edge of the protection frame. When the protection frame is closed, the press-locking component and the elastic lock catch component are matched with each other, and both the press-locking component and the elastic lock catch component are provided with through holes for the penetration of the free end of the lock shaft. When the master switch is arranged on the door sheet of the explosion-proof control box, the special mechanical interlock device can ensure that opening operation can not be performed in the electrifying process and the electrifying operation can not be performed in the opening process, thereby meeting the requirements for safe operation in hazardous sites such as underground mine and the like.

Description

technical field [0001] The invention relates to the technical field of explosion-proof control boxes, in particular to a mechanical interlock device arranged on a door panel of an explosion-proof control box. Background technique [0002] The explosion-proof control box is mainly used in dangerous places such as explosive gas environment and combustible dust. According to the regulations in GB3836, when the voltage of the control circuit of the mine explosion-proof control box is > 127V, a mechanical interlocking structure is required to ensure that the cover cannot be opened when the power is on, and the power cannot be energized when the cover is opened. [0003] At present, the main switch of the existing mine explosion-proof control box is arranged on the side, and the problem that the main switch is arranged on the side is that the width of the entire explosion-proof control box is large and the space occupied is large. Therefore, it is very necessary to arrange the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H9/22
Inventor 高飞孙谦
Owner SHANDONG HUADUN TECH
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