FIELD: construction.
SUBSTANCE: invention relates to ladders. A support element for an object comprises the first support stand and the second support stand, besides, the first support stand is made as capable of axial movement relative to the support stand for axial extension of the support element, at the same time the first support stand comprises a body, made as capable of placement and extension of the second support stand, at the same the body comprises a blocking element, having a blocking position for blocking of relative axial movement of the first support stand relative to the second support stand and having opening position for provision of relative axial movement of support stands, besides, the blocking element comprises a fixator, which is made as capable of movement by inclination in the body for alternate achievement of blocking position and opening position of the blocking element, at the same time the fixator comprises a cavity for placement of the second support stand, besides, the fixator comprises a limiting surface, which surrounds the perimeter of the cavity, besides, the limiting surface is made as capable of engagement with at least two opposite parts of the perimeter of the second support stand in the blocking position of the blocking element, besides, the support element additionally comprises a shift element to shift the support element to the position of the axial extension. Also a device is described, which comprises a frame, containing at least one support, besides, at least one support comprises a support element.
EFFECT: increased stability of a ladder, higher reliability of operation of a blocking element and support elements of a ladder, increased convenience and simplicity of regulation of support element length.
18 cl, 12 dwg
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Authors
Dates
2014-05-27—Published
2010-02-11—Filed