AT410206B - DISASSEMBLY FORK WITH LOAD-BEARING INTERMEDIATE SUSPENSION FOR WORK AND SCAFFOLDING PLATFORMS - Google Patents

Description

       

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   The invention relates to a dismantling fork with load-bearing intermediate hangers for work and protective scaffolding platforms (still scaffolding platforms or just called groynes). It is the attachment means for the groins to the construction crane. The groins can also be dismantled with this device if they are just under one far extended roof or cornices are installed and the 4-legged hanger that is usually used fails (Fig. 1)
The need to unravel under eaves or cornices has only recently increased and will continue to increase due to the legal situation.The groynes are no longer dismantled after the shell construction, but remain as a safety device for the subsequent works such as carpenters, tinsmiths, roofers, etc. on the structure If the 4-legged hanger is used for dismantling under construction protrusions,

   there is severe damage to the structure and often the dismantling attempt is unsuccessful. The dismantling is then carried out manually with crane support, the workplaces that the dismantling team must take up are very improvised and dangerous
Lifting the groynes with constructions similar to those of conventional crane forks (pallet forks) is too risky, since there is no safeguard.

   The groyne is a very flat, consequently wind-sensitive element, which should only be placed loosely on forks and should not be transported. When unhinging, loads occur that sometimes provoke a groynes crash
The 4-leg hanger and the unsecured crane fork are the current status of construction site practice
The prior art is represented by the following patents
US 4,542,928 A (A Fowler Jr) Sept 24, 1985
Crane fork in the classic form with two fork tines In addition, a construction to create the desired position of the crane! in the room in which the crane hook is also hung
AU 11 555/95 B (Gary Lan Jones) April 13, 1995
Lifting device for plate-like components.

   All four support points are on the underside of the board, without securing the object to be lifted
DE 42 37 155 C1 (Noe-Schaltechnik G Meyer-Keller GmbH & Co) 4 Nov 1993
Implementation device for scaffolding units, consisting of two C-shaped brackets which are attached to the top of the scaffolding component, the scaffolding platform. The distance between the scaffolding platform and the possible building protrusion is reduced
The object of this invention is to create a construction that meets the following requirements 1) The scaffolding platform element must be securely hung on the crane
2) The platform must remain stable during the lifting process
3) The often very small distance between the lower edge of the roof or cornices and groynes should not be reduced.
Fig 1 Current status,

   the 4-leg sling fails with projecting parts of the building
Fig. 2 dismantling fork with load-bearing intermediate slant Schrägnss. bottom view
Fig. 3 disassembly fork with load-bearing intermediate hangers. System sketch. page plan
The task is solved in that, on the one hand, an (at least) 2-leg sling, the intermediate sling (1), which is attached to the load beam (4), is used to attach the groin and, on the other hand, the groin is removed with the dismantling fork ( 2,3 and 4) supported.



  The support point (U), as seen from the stage center of gravity (S), must lie opposite the fictitious connecting line of the two lifting eyes or brackets (7). It is important that the intermediate hanger (1) is not used as a more or less slack security, but by load-bearing is to be prevented in order to prevent even slight relative movements between groin and dismantling fork (2,3 and 4)
If the tine tips (5) of the fork tines (2) are slightly raised, this load is picked up automatically. If there is an actuator (6) between the load bar (4) and the intermediate hanger (1), such as B a lifting hoist, a spur gear hoist or even a chain with a shortening hook interposed, the scaffolding platform can also be relative to a certain area

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Claims (4)

Tilting the dismantling fork (2, 3 and 4) This can be useful if the anchoring of the groyne on the structure is particularly unfavorable. The adjusting element (6) also allows the intermediate hanger (1) to be adapted to the different distances between the stop bars or brackets (8) with the different groyne types. The shortening or lengthening of the distance between the suspension point on the load arm (4) and the intermediate hanger (1), due to the greater or lesser spread of the hanger line, is compensated for with the adjusting element (6). The fork width, the tine spacing, is intentionally very high chosen to be low so that use without intermediate hangers (1) is not attempted at all due to the unstable groynes. The use of only one tine (2) is possible in principle, but many commercially available scaffolding groins have stiffening elements in the center or even complete support structures, the shape of the narrow fork was chosen The quasi two-dimensional shape of the fork (2, 3 and 4) ensures the correct and safe use of the intermediate hanger (1). In addition, the two-dimensional, flat shape of the fork (2, 3 and 4) makes it easier for them to use it Transport, e.g. on a truck, very important. For comparison, let's look at the spatial structure of a well-known, only a relatively small pallet fork is remembered, which is very bulky and wastes space and is therefore also difficult to transport As with all commercially available crane forks, the shape and rigidity of this construction is such that the crane hook is hooked in exactly above the overall center of gravity, of the groin and dismantling fork, so that the preselected position of the groin is preserved during the hanging and transporting process.   1 dismantling fork (2, 3 and 4) with load-bearing intermediate hanger (1) for work and Protective scaffolding platform, characterized in that the load-bearing intermediate hanger (1) engages with one end on the load beam (4) or vertical bar (3) facing the crane, and with the lower end on the stop bars or bracket (8) of the scaffolding platform, whereby below the groyne, in the one facing away from the stop sleeves or ball (8) Area on which groin attacking tines (2) are provided 2 disassembly fork (2, 3 and 4) with load-bearing intermediate hanger (1) according to claim 1, characterized in that the tines (2) are designed as a single support arm 3 disassembly fork (2, 3 and 4) with load-bearing intermediate hanger (1) according to claim 1 or claim 2, characterized in  that the tine tips (5) or the support arm tip are raised compared to the tines (2) or the support arm and that there is an actuator (6) between the suspension point on the load beam (4) or vertical bar (3) and the intermediate hanger (1) is arranged 4 disassembly ball (2, 3 and 4) with load-bearing intermediate hanger (1) according to claim 3, characterized in that the adjusting part (6), as a hoist, as a spur gear hoist or as a chain with shortening hooks THEREFORE 2 SHEET OF DRAWINGS