Coal mine safety supporting device

The utility model provides a coal mine safety supporting device which comprises a supporting column, a pressure bearing assembly arranged at the top end of the supporting column and a pressurizing assembly arranged at the bottom end of the supporting column. A piston rod is arranged in the supporting column, the piston rod and the pressurizing assembly are oppositely arranged in a spaced mode, and the piston rod slides in the extending direction of the supporting column. Compared with the prior art, the coal mine safety supporting device is simple in structure, good in supporting effect, safe and reliable. 本实用新型提供一种煤矿安全支护装置，包括：支撑柱，设置在所述支撑柱顶端的承压组件，以及设置在所述支撑柱底端的增压组件；所述支撑柱内设有活塞杆，所述活塞杆与所述增压组件正对间隔设置，所述活塞杆沿所述支撑柱的延伸方向滑动。与相关技术相比，本实用新型提供的煤矿安全支护装置结构简单，支护效果好，安全可靠。