SU13680A1 - Scaffolding - Google Patents

Description

The invention relates to the scaffolding known in the construction industry, but based on the principle of the so-called

Nurenberg scissors, with the use of the cables thrown over the pulleys, wound to tension the drum. In the proposed construction site, two cables, thrown over each other in the intersection between the scaffolds, through the pulleys on the struts and fastened at one end to the upper scissors levers, while others are wound on a ratchet, are intended to communicate stiffness to the system of two parallel Nuremberg scissors.

In the schematic drawing of FIG. 1 shows a view of elevated forests to the front; FIG. 2 is the same side view; fig; 3-view of the folded scaffolding in front; FIG. 4 - side

a view of a part of the timber truck, and FIG. 5 is a top view of FIG. four.

The scaffolding consists of two parallel Nuremberg knives, whose arms are articulated at points a and a, formed by struts on gas iron pipes, the ends of which are slightly turned and removed by cutting g, g and u, of different diameters. Nuts to, to fasten

with iron squares riveted

with levers, and inserted between the two copper washers w, .sh, reducing the possibility of seizing, facilitate the turning of levers. At the ends of the pipe-struts, on opposite sides, on the axes x, grooved pulleys d, 9 are inserted, through which steel cables e, e are thrown, the upper ends of which are attached to the upper arms of the shears, c, and the lower ones are wound on the ratchet t. With the tensioned position, the cables take the diagonal position e, g, e, g in the intervals between the struts a, b.

The subject of the patent.

The scaffolding using tensioned, thrown over the pulleys of cables with a system of crossing, pivotally connected levers, forming the so-called Nuremberg scissors, characterized by the fact that two cables e, e, in order to communicate the rigidity system against buckling, with the help of pulleys 9, 9, intersecting each other diagonally between the spacers о, where the upper ends of the cables are attached to the upper arms of the shears, and the lower ends are wound around the ratchet t.

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