Anti -counterfeiting pushes up safe canopy

• Main Authors: LIN YONGSHENG, YI JINWU, YI MINGDE, WEN SENCAI
• Format: Patent
• Language: Chinese; English
• Published: 26.10.2018
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; LARGE UNDERGROUND CHAMBERS; MINING; SHAFTS; TUNNELS

The utility model discloses an anti -counterfeiting pushes up safe canopy, it includes stand, first connecting piece, connecting rod, second connecting piece, top beam and top guard plate, the one endof first connecting piece is fixed in the shaft of stand, the free end of first connecting piece wit...