Stable supporting device for coal mine tunnel

• Main Authors: DONG GUIFENG, LIU JIE
• Format: Patent
• Language: Chinese; English
• Published: 14.12.2021
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; LARGE UNDERGROUND CHAMBERS; MINING; SHAFTS; TUNNELS

The utility model discloses a stable supporting device for a coal mine tunnel, which comprises a supporting bottom frame, a bearing column is connected onto the supporting bottom frame, a top frame and a clamping frame are respectively arranged on the bearing column, the clamping frame is positioned below the top frame, the top of the bearing column is connected with the top frame, the bearing column penetrates through the clamping frame, and pressing blocks are respectively arranged on the top frame and the clamping frame. Pipe pressing grooves are evenly formed in the pressing blocks, supporting pipes are inserted into the pipe pressing grooves in a penetrating mode, a lifting device capable of lifting the clamping frame is arranged on the supporting bottom frame, rail strips are laid on the lower face of the supporting bottom frame, and idler wheels of the rail wheels are inserted into rail grooves of the rail strips. By controlling the reversing valve on the two-way hydraulic pump and the ejection rod of