| 摘要 |
FIELD: construction.SUBSTANCE: ladder stand comprises the first stands or lifting stands 14) with steps arranged in between, second stands or support stands hingedly connected to the first stands, a connecting or a tray element connected to the upper ends of the first stands, and also a U-shaped bracket, which has side elbows and a cross elbow and stretches from the connecting or the tray element as capable of rotation and/or displacement, besides, the bracket in the operating position forms a plane stretching across the ladder stand. The connecting or the tray element in the zone of each first stand has a through hole, providing for connection with its cavity, besides, one of side elbows of the bracket stretches through each through hole, besides, in the first position of the bracket its side elbows stretch inside cavities of the first stands, and the cross elbow is placed in the connecting or tray element or stretches in its zone, besides, in the second position the bracket stretches in the plane across the ladder stand, side elbows of the bracket stretch outside the cavities of the first stands and rest with their ends onto the connecting or tray element, besides, the free end of at least one of side elbows of the bracket has efficient cross section, which is more than the efficient cross section of the through hole.EFFECT: increased reliability and convenience of usage, possibility to place heavy objects.29 cl, 13 dwg |
