Plug hole locking safety device

The utility model discloses a plug hole locking safety device. The plug hole locking safety device comprises a supporting rod, a rootstock steel plate fixing frame and a folding rod. One end of the supporting rod is inserted into a furnace eye of the mixing furnace and is inserted into the furnace eye; the other end of the supporting rod extends outwards along a chute of the mixing furnace; the stock steel plate fixing frame is arranged on the outer side of the chute; and the extending end of the supporting rod is movably clamped on the stock steel plate fixing frame. The device can reduce the labor intensity of workers and improve the safety coefficient of production. 本申请公开了一种塞眼锁紧安全装置包括：撑杆、砧木钢板固定架、折杆；撑杆的一端插设于混合炉炉眼内并与炉眼插接；撑杆的另一端沿混合炉的溜槽向外延伸；砧木钢板固定架设置于溜槽外侧；撑杆的延伸端活动卡接于砧木钢板固定架上。该装置可减轻工人劳动强度，提高生产的安全系数。