WORKING PLATFORM Russian patent published in 1995 - IPC

FIELD: equipment for construction operations. SUBSTANCE: working platform has mounted on frame floor. Frame is made as cantilever of hinged to each other horizontal and vertical beams. In the case, platform has at least one upper or lower brace, hinged to horizontal beam of cantilever by vertical plate with holes for axes of braces. Other end of each brace has fixed pin to be set in one of holes of shields ribs, to which cantilever is fixed to also by pin. In the case horizontal beam has mounted on it eccentric clamp to be engaged with rib of shield. A version of platform has auxiliary horizontal beam with additional eccentric clamp and with limiting pressing beam. One end of auxiliary beam has hinge to be fixed to rib of shield in point of its crossing lower brace. Another end of auxiliary beam has hinged to it vertical post. Other end of the post is hinged to vertical plate of horizontal beam of cantilever frame. EFFECT: working platform is used in construction operations. 4 cl, 4 dwg