SU70862A1 - Collapsible scaffolding for construction work - Google Patents

Description

The collapsible metal scaffoldings proposed according to the invention are intended for construction (brickwork, plastering, concrete conveying, etc.).

The forests are made up of individual posts, cross beams and girders, which can be assembled according to different designs, depending on the conditions of work.

A feature of the proposed scaffolding is that in order to be able to change the span of the girders, the transverse beams have through nests in which an eccentric type clamp is fixed, which serves to jam the girder in the nest.

Scaffoldings are used in braces, fitted at the ends with a hook to engage the stands of scaffolding and an eccentric to clamp the hook on the stand.

FIG. 1 is a front view of the scaffolding; in fig. 2 - side forest view; in fig. 3-scaffolding front with widely spaced racks (with less load on the forest); in fig. 4-bottom view of the rack

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scaffolding in front; in fig. 5 is a side view of FIG. four; in fig. b - view of the middle part of the stand of the scaffolding (extension on the lower part in front); in fig. 7 is a side view of FIG. 6; in fig. 8, 9 - view of the transverse beam of the forest on a large scale; in FIG. 10 is a detail of a hook of a brace on a large scale (side view) and in FIG. And detail of the hook brace on a large scale (top view).

Racks 7 and 2 (Fig. 4-7) consist of three steel rods 70 connected in height by clamps 9 in such a way that the stand contour in the plan forms an equilateral triangle. The lower pillars 7 are supported on a metal plate A, welded to the bent ends of 77 rods 70. To the lower ends of the rods of the upper racks 2 are welded pipe sections B, with which the racks 2 are mounted on the upper ends of the racks 7. By increasing the number of racks 2, you can , increase and the overall height of forests to the desired size.

The cross beams 3 (fig. 2), supported by the stands by means of clamps 9, are welded from steel

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rods in the form of two parallel diagonal trusses 72 and 12 (Fig. 8-9), fastened together by U-shaped metal elements G, forming sockets 4, into which girders 4 are inserted. In elements G, the clip D of eccentric type is fastened. The clamp D, which is a turntable with two angled oblique corners, turns with a key and wedges the girders 4 inserted into the sockets 4, pressing them against the vertical wall of the element F and the vertical rods of the diagonal bars 13.

Runs 4, arranged from the floorboards, are laid with a running floor consisting of wooden boards 5 and mortgage boards 6. The fence of the flooring is made of handrails 8 of the boards 8, laid on the clamps 9.

The scaffolding in the longitudinal direction (i.e., along the facade of the building) is carried out by braces 7 (Fig. 1-2), the ends of which are fitted with hooks B, hinged to the braces through the pins with the head 13 and the eccentric E (Fig. U-11 ). With hooks B, the brace is hooked onto the rods H and, by turning the key of the head 13, fix it to the stand with the eccentric E.

The scaffolding of the proposed type occurs as follows.

In accordance with the scaffolding scheme selected, posts 7 are placed, a crossbeam 3 is made into each pair of stands, supported by clamps 9, then the ends of the runs 4 are inserted into the slots of this beam coinciding with stands 7, after which the unit is locked

by turning the clamp D with the key.

After turning, the clamp D tightly presses both girders to the walls of the socket and to the spring bars of the stand, forming a rigid assembly of three abutting elements 7, 3, 4.

Following the installation of all the runs 4, they proceed to the laying of the boards 5 and the mortgage boards 6, intended for laying in the places where the floor is adjoined to the racks and as additional elements, in case of a change in the longitudinal pitch of the racks.

Between the rods of the racks of the plant t of the fence board 8, leaning their ends on the clamps 9.

Then proceed to the installation of braces 7, which are fastened to the uprights, as indicated above. The removal of the scaffolding is carried out in reverse order.

Subject invention

Claims (2)

1. Folding scaffolding for construction work, made up of individual racks, transverse beams and girders, characterized in that in order to be able to change the span of the girders, the transverse beams 3 have through slots in which an eccentric clamp D is rotatably fixed, which is used for jamming run in the nest. 2. In forests, according to claim 1, use braces provided with hooks B at the ends for hooking to scaffold posts and eccentric E for clamping the hook on the rack. FIG. one FIG. 2