| 摘要 |
The present invention relates to a safety access apparatus for a grating, and more specifically, to a safety access apparatus for a grating, which is installed to ventilate the underground structure and wherein an opening unit in a predetermined size is formed to allow access of a worker. The safety access apparatus for a grating comprises: a door unit operated to be able to slide in a predetermined direction on the upper surface of the grating to open and close the opening unit by a linear reciprocating movement; a cylinder unit, arranged in both sides of the door unit, respectively, fixed to the grating, and connected to the door unit to drive the linear reciprocating movement of the door unit; a door locking unit, mounted on one side of the opening unit, and securing the door unit by being coupled with the door unit when the door unit closes the opening unit. Therefore, the present invention prevents falling accidents and facilitates the opening and closing operation to provide ease of access. |
