Safety barrier for erection around open manhole covers to sewers

摘要: The safety barrier has four, hinged panels. front panel (2) forms a gate, the rear (6) is fixed to temporary cover (8) for hole (21) which can be moved from an open closed position. A small rod on foot (7) and attached cover. (9) ring fits over curved (10) upper surface of There groove (11) in opposite rod. side sections (6a, 6b) (5a, 5b) are attached. two leaves (2a, 2b) lock forming access gate.