| 摘要 |
FIELD: manufacturing technology.SUBSTANCE: polygonal protective frame with several sides contains side walls, each of which has near at least one upper or lower edge of each side an end section, which comprises a plate and an adjacent post located in fact perpendicular to each other, and several pairs of angle pads. Each angular pad has in each corner of the protective frame a top angular strap and a lower angular strap. Each of these straps has cavities oriented in two directions. Each cavity is limited by at least one outer side partition and one inner side partition and receives along each of two outer side partitions, respectively, posts and adjacent plates. Polygonal protective frame additionally contains elements under tension, each of which tightens together closer to each other angular pads of each pair for pulling them to each other. Each angular pad comprises an outer process located in the corner of the angular pad to accommodate an expansion element.EFFECT: invention provides disassembling and assembling of the frame providing it with rigidity and strength.9 cl, 77 dwg |
