Hangers for fixing on tunnel supports in mining or tunnelling - comprises traverse with concave deformed middle section to accommodate bulge on base of support and hooks bolted to its rear

摘要

Two vertical hooks (3) are bolted (12, 13) to the back of the traverse (2) on each side of its centre section (4), which hook over the flange of the tunnel support (7). The centre section of the traverse has a concave deformation (10) with profiled cheeks (8, 9) to act as a seating for differently formed tunnel supports. The surface of the seating (8, 9) is flat with a V centre section distanced from the hole (6) drilled in the sides, through which the suspension chain passes. In the middle of the traverse centre section is a long slot which, together with the holes (6, 14) provide fixing for the hooks and the suspension chain. ADVANTAGE - Simple design with high stability.