Hole protection device

The utility model discloses a hole protection device which comprises a protection plate, the protection plate is installed on a hole through an installation piece, the protection plate is connected and installed on the installation piece in the mode that the hole can be opened and closed, and the installation piece comprises an insertion part used for being inserted into the hole to form positioning and a positioning part used for abutting against the outer side of the periphery of the hole. The hole protection device has the advantages of being high in safety, good in reliability and the like. 本实用新型公开了一种洞口防护装置，包括防护板，防护板通过安装件安装在洞口上，防护板以能打开和封闭所述洞口的方式连接安装在安装件上，安装件包括用于插入洞口形成定位的插入部和用于与洞口四周外侧相抵的定位部。该洞口防护装置具有安全性高、可靠性好等优点。