NL1037518C2 - HINGE CONSTRUCTION OF A FOLDING SCAFFOLD. - Google Patents

Description

Title: Hinge construction of a folding scaffolding.

For various activities, use is made of a scaffolding 5, for example, for bricklaying the facades of a building. This scaffolding is generally assembled on the construction site from separate parts if it is a traditional or system scaffolding. The use of a collapsible scaffolding which only needs to be folded out at the construction site has the following advantages over this method: - A reduction of the physical load on the builders.

- A shortening of the time for assembly and dismantling at the construction site.

15 - Assembly takes place in a conditioned room as well as in an ergonomically sound manner.

- A significant reduction in safety risks during assembly because these operations no longer take place at heights.

A construction of such a collapsible scaffolding is not new and is already described, inter alia, in the following patents: 1) JP6136934 (A) 2) WO 90/14479 A1 3) WO 86/01847 A1

4) JP 06 057939 A

The structural embodiments described herein, however, have the following disadvantages: (a) The work floors have a fixed height because the pivot points on the vertical tubes are not height adjustable (reference 1 to 4).

(b) The horizontal bending of the vertical pipes is not reduced because the hinge connection is not blocked or is only blocked on one side in the position of use (reference 1,2 and 3).

35 (c) The passage over the shop floor in the longitudinal direction is impeded by a diagonal tube or brace. Such a construction often leads to head injury in practice (reference 1 and 4).

1037518 5 2

The aim of the hinge construction described below is to avoid the aforementioned disadvantages. The differences relate to the technical implementation of the hinge construction: a) The hinge points are mounted on standard available couplings which are clamped around the tubes. This makes it possible to install the work floors at any desired height.

b) The pivot points are blocked after folding out, whereby the vertical tubes are rigidly coupled to the horizontal tubes that form part of the work floor.

c) The brace has been removed, which also avoids the risk of head injury.

The hinge construction will now be explained in more detail with reference to a number of figures.

Figure 1: This is the side view of the structure in the collapsed position which is used for transport and storage.

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Figure 2: This side view shows the principle of the collapsible construction where it is drawn in the half open position.

Figure 3: This figure shows the side view in the open position. The pivotal movement is hereby blocked by applying two bolts marked with an (*). Blocking the hinge construction is not only necessary for erecting the scaffolding, but it also increases dimensional stability during use.

Figure 4: A detail of the hinge and coupling is drawn: The plate (u) is provided with a notch (v) with which the plate can rotate around the hinge pin (b). This hinge pin (b) is inserted through the plate (p) which is clamped to a tube with the aid of a scaffolding coupling. The bolt (m) must be removed before opening. To connect the plate (u), the bolt (m) is put back in thread (d).

Figure 5: The scaffolding is shown here in the collapsed position, whereby a detail of the hinge construction is also shown.

"3 -a

Figure 6: This drawing shows the half open position.

Figure 7: This drawing shows the folded-out scaffolding in the position of use as well as a detail of the hinge connection.

1037518

Claims (2)

A hinge construction which is used for folding in and out of a scaffold, and wherein the hinge points are arranged on height-adjustable clamps which are placed around the vertical tubes. A device as mentioned under claim (1) and wherein all hinges of the work floors can be locked in folded-out position. 15 1 0 3 7 5 1 8