Fire escape – ladder – or scaffold – Self-sustaining
Patent
1998-04-10
2000-11-28
Chin-Shue, Alvin
Fire escape, ladder, or scaffold
Self-sustaining
1821868, E04G 730
Patent
active
061522635
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a scaffold consisting of a construction assembly and a frame coupled to the construction assembly, which frame is provided with at least one foot.
Such scaffolds are known generally and are chiefly used in the building industry. The construction assembly comprises for the most part a number of uprights which are coupled to each other by means of construction elements in order to provide structure and to increase the construction's stability. For the most part, the uprights are made up of various pipes coupled to each other. The coupling between the construction assembly and the frame in the known scaffold is often formed by eyes on the uprights in which there are hooks that are attached to the frame. On the lower side, the frame is often coupled to a cross-bar. For this purpose, the frame is provided with a foot which partially encircles the cross-bar.
The drawback of the known scaffolds is that when mounting the frame onto the construction assembly, the frame must be lifted up and, moreover, must be positioned with respect to the construction assembly in which the hooks and the foot have to be brought above the eyes and the cross-bar in order to then bring about coupling by lowering the frame. In addition, while positioning the frame which is already difficult enough, the weight of the frame must be lifted as well. This is a rather tiring operation. With a view to the increasingly stricter requirements with respect to working conditions in the building industry, such difficult operations are undesirable.
An aim of the invention is to provide a scaffold of the type mentioned at the beginning in which assembly can take place more simply and therefore with less effort, particularly as far as the coupling of the frame to the construction assembly is concerned. For this purpose, the scaffold according to the invention is characterized in that the foot is provided with a supporting surface with which the frame, at least while the frame is being mounted onto the construction assembly, rests on a bearing surface of the construction member. Because of this, the weight of the frame is carried by the construction assembly while it is being mounted. The worker only has to place the frame with its foot onto the construction assembly. In addition, only the foot of the frame has to be positioned with respect to the construction assembly. Only after that will coupling be brought about, for which it is necessary that the frame be positioned with respect to the construction assembly. Because of this, it is not even necessary that the frame with its foot be brought in a vertical position above the construction assembly; the frame can also be placed horizontally or at an angle after which the frame can be tilted up to the vertical position. Because of this, the frame does not have to be lifted so high.
An embodiment of the scaffold according to the invention is characterized in that the supporting surface is situated at a level lower than the bearing surface in a vertical direction when in the assembled state. By seeing that the hooks are situated above the eyes after tilting up the frame, coupling can be brought about just by lowering the frame. It is not necessary to lift the frame up in order to bring about the coupling; it only has to be brought down a little. This is only possible if the supporting surface is also moved downwards as a result of which the supporting surface no longer rests on the construction member and when assembled is situated at a level lower than the bearing surface of the construction member.
A further embodiment of the scaffold with which lowering the frame can be realized advantageously is characterized in that the foot is provided with a stepped opening, a first part of which is limited by a wall which forms a supporting surface and which stepped opening comprises a second part which lies deeper in which the construction member is situated when in the assembled state. Because of this, after having tilted the frame into the vertical position, the frame only has to be move
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Garritsen Alphonsus Antonius
Papadopoulous Demetrios Georgiou
Van Oers Johanna Maria
Chin-Shue Alvin
SGB Holdings
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